diff --git a/SafeExamBrowser.UserInterface.Desktop/Controls/ActionCenter/AudioControl.xaml.cs b/SafeExamBrowser.UserInterface.Desktop/Controls/ActionCenter/AudioControl.xaml.cs
index 293491fb..42eb024d 100644
--- a/SafeExamBrowser.UserInterface.Desktop/Controls/ActionCenter/AudioControl.xaml.cs
+++ b/SafeExamBrowser.UserInterface.Desktop/Controls/ActionCenter/AudioControl.xaml.cs
@@ -49,13 +49,39 @@ namespace SafeExamBrowser.UserInterface.Desktop.Controls.ActionCenter
 
 			audio.VolumeChanged += Audio_VolumeChanged;
 			Button.Click += (o, args) => Popup.IsOpen = !Popup.IsOpen;
-			Button.MouseLeave += (o, args) => Task.Delay(250).ContinueWith(_ => Dispatcher.Invoke(() => Popup.IsOpen = Popup.IsMouseOver));
+			var lastOpenedBySpacePress = false;
+			Button.PreviewKeyDown += (o, args) =>
+			{
+				if (args.Key == System.Windows.Input.Key.Space)                 // for some reason, the popup immediately closes again if opened by a Space Bar key event - as a mitigation, we record the space bar event and leave the popup open for at least 3 seconds
+				{
+					lastOpenedBySpacePress = true;
+				}
+			};
+			Button.MouseLeave += (o, args) => Task.Delay(250).ContinueWith(_ => Dispatcher.Invoke(() =>
+			{
+				if (Popup.IsOpen && lastOpenedBySpacePress)
+				{
+					return;
+				}
+				Popup.IsOpen = Popup.IsMouseOver;
+			}));
 			MuteButton.Click += MuteButton_Click;
 			MutedIcon = new XamlIconResource { Uri = new Uri("pack://application:,,,/SafeExamBrowser.UserInterface.Desktop;component/Images/Audio_Muted.xaml") };
 			NoDeviceIcon = new XamlIconResource { Uri = new Uri("pack://application:,,,/SafeExamBrowser.UserInterface.Desktop;component/Images/Audio_Light_NoDevice.xaml") };
-			Popup.MouseLeave += (o, args) => Task.Delay(250).ContinueWith(_ => Dispatcher.Invoke(() => Popup.IsOpen = IsMouseOver));
+			Popup.MouseLeave += (o, args) => Task.Delay(250).ContinueWith(_ => Dispatcher.Invoke(() =>
+			{
+				if (Popup.IsOpen && lastOpenedBySpacePress)
+				{
+					return;
+				}
+				Popup.IsOpen = IsMouseOver;
+			}));
 			Popup.Opened += (o, args) => Grid.Background = Brushes.Gray;
-			Popup.Closed += (o, args) => Grid.Background = originalBrush;
+			Popup.Closed += (o, args) =>
+			{
+				Grid.Background = originalBrush;
+				lastOpenedBySpacePress = false;
+			};
 			Volume.ValueChanged += Volume_ValueChanged;
 
 			if (audio.HasOutputDevice)
diff --git a/SafeExamBrowser.UserInterface.Desktop/Controls/ActionCenter/KeyboardLayoutControl.xaml.cs b/SafeExamBrowser.UserInterface.Desktop/Controls/ActionCenter/KeyboardLayoutControl.xaml.cs
index e43d7b5b..d9a5a85a 100644
--- a/SafeExamBrowser.UserInterface.Desktop/Controls/ActionCenter/KeyboardLayoutControl.xaml.cs
+++ b/SafeExamBrowser.UserInterface.Desktop/Controls/ActionCenter/KeyboardLayoutControl.xaml.cs
@@ -51,25 +51,36 @@ namespace SafeExamBrowser.UserInterface.Desktop.Controls.ActionCenter
 					LayoutsStackPanel.Children[0].Focus();
 				}));
 			};
-			var lastOpenedBySpacePress = DateTime.MinValue;
+			var lastOpenedBySpacePress = false;
 			Button.PreviewKeyDown += (o, args) =>
 			{
 				if (args.Key == System.Windows.Input.Key.Space)                 // for some reason, the popup immediately closes again if opened by a Space Bar key event - as a mitigation, we record the space bar event and leave the popup open for at least 3 seconds
 				{
-					lastOpenedBySpacePress = DateTime.Now;
+					lastOpenedBySpacePress = true;
 				}
 			};
 			Button.MouseLeave += (o, args) => Task.Delay(250).ContinueWith(_ => Dispatcher.Invoke(() =>
 			{
-				if (Popup.IsOpen && (DateTime.Now - lastOpenedBySpacePress).TotalSeconds < 3)
+				if (Popup.IsOpen && lastOpenedBySpacePress)
 				{
 					return;
 				}
 				Popup.IsOpen = Popup.IsMouseOver;
 			}));
-			Popup.MouseLeave += (o, args) => Task.Delay(250).ContinueWith(_ => Dispatcher.Invoke(() => Popup.IsOpen = IsMouseOver));
+			Popup.MouseLeave += (o, args) => Task.Delay(250).ContinueWith(_ => Dispatcher.Invoke(() =>
+			{
+				if (Popup.IsOpen && lastOpenedBySpacePress)
+				{
+					return;
+				}
+				Popup.IsOpen = IsMouseOver;
+			}));
 			Popup.Opened += (o, args) => Grid.Background = Brushes.Gray;
-			Popup.Closed += (o, args) => Grid.Background = originalBrush;
+			Popup.Closed += (o, args) =>
+			{
+				Grid.Background = originalBrush;
+				lastOpenedBySpacePress = false;
+			};
 		}
 
 		private void Keyboard_LayoutChanged(IKeyboardLayout layout)
diff --git a/SafeExamBrowser.UserInterface.Desktop/Controls/ActionCenter/NetworkControl.xaml.cs b/SafeExamBrowser.UserInterface.Desktop/Controls/ActionCenter/NetworkControl.xaml.cs
index 47edeb73..099b0239 100644
--- a/SafeExamBrowser.UserInterface.Desktop/Controls/ActionCenter/NetworkControl.xaml.cs
+++ b/SafeExamBrowser.UserInterface.Desktop/Controls/ActionCenter/NetworkControl.xaml.cs
@@ -45,23 +45,30 @@ namespace SafeExamBrowser.UserInterface.Desktop.Controls.ActionCenter
 
 			adapter.Changed += () => Dispatcher.InvokeAsync(Update);
 			Button.Click += (o, args) => Popup.IsOpen = !Popup.IsOpen;
-			var lastOpenedBySpacePress = DateTime.MinValue;
+			var lastOpenedBySpacePress = false;
 			Button.PreviewKeyDown += (o, args) =>
 			{
 				if (args.Key == System.Windows.Input.Key.Space)                 // for some reason, the popup immediately closes again if opened by a Space Bar key event - as a mitigation, we record the space bar event and leave the popup open for at least 3 seconds
 				{
-					lastOpenedBySpacePress = DateTime.Now;
+					lastOpenedBySpacePress = true;
 				}
 			};
 			Button.MouseLeave += (o, args) => Task.Delay(250).ContinueWith(_ => Dispatcher.Invoke(() =>
 			{
-				if (Popup.IsOpen && (DateTime.Now - lastOpenedBySpacePress).TotalSeconds < 3)
+				if (Popup.IsOpen && lastOpenedBySpacePress)
 				{
 					return;
 				}
 				Popup.IsOpen = Popup.IsMouseOver;
 			}));
-			Popup.MouseLeave += (o, args) => Task.Delay(250).ContinueWith(_ => Dispatcher.Invoke(() => Popup.IsOpen = IsMouseOver));
+			Popup.MouseLeave += (o, args) => Task.Delay(250).ContinueWith(_ => Dispatcher.Invoke(() =>
+			{
+				if (Popup.IsOpen && lastOpenedBySpacePress)
+				{
+					return;
+				}
+				Popup.IsOpen = IsMouseOver;
+			}));
 			Popup.Opened += (o, args) =>
 			{
 				Grid.Background = Brushes.Gray;
@@ -74,7 +81,11 @@ namespace SafeExamBrowser.UserInterface.Desktop.Controls.ActionCenter
 					}
 				}));
 			};
-			Popup.Closed += (o, args) => Grid.Background = originalBrush;
+			Popup.Closed += (o, args) =>
+			{
+				Grid.Background = originalBrush;
+				lastOpenedBySpacePress = false;
+			};
 			WirelessIcon.Child = GetWirelessIcon(0);
 
 			Update();
diff --git a/SafeExamBrowser.UserInterface.Desktop/Controls/ActionCenter/RaiseHandControl.xaml.cs b/SafeExamBrowser.UserInterface.Desktop/Controls/ActionCenter/RaiseHandControl.xaml.cs
index f5e6e1e2..5ed86791 100644
--- a/SafeExamBrowser.UserInterface.Desktop/Controls/ActionCenter/RaiseHandControl.xaml.cs
+++ b/SafeExamBrowser.UserInterface.Desktop/Controls/ActionCenter/RaiseHandControl.xaml.cs
@@ -55,17 +55,17 @@ namespace SafeExamBrowser.UserInterface.Desktop.Controls.ActionCenter
 			RaisedIcon = new XamlIconResource { Uri = new Uri("pack://application:,,,/SafeExamBrowser.UserInterface.Desktop;component/Images/Hand_Raised.xaml") };
 			Icon.Content = IconResourceLoader.Load(LoweredIcon);
 
-			var lastOpenedBySpacePress = DateTime.MinValue;
+			var lastOpenedBySpacePress = false;
 			NotificationButton.PreviewKeyDown += (o, args) =>
 			{
 				if (args.Key == System.Windows.Input.Key.Space)                 // for some reason, the popup immediately closes again if opened by a Space Bar key event - as a mitigation, we record the space bar event and leave the popup open for at least 3 seconds
 				{
-					lastOpenedBySpacePress = DateTime.Now;
+					lastOpenedBySpacePress = true;
 				}
 			};
 			NotificationButton.MouseLeave += (o, args) => Task.Delay(250).ContinueWith(_ => Dispatcher.Invoke(() =>
 			{
-				if (Popup.IsOpen && (DateTime.Now - lastOpenedBySpacePress).TotalSeconds < 3)
+				if (Popup.IsOpen && lastOpenedBySpacePress)
 				{
 					return;
 				}
@@ -76,9 +76,20 @@ namespace SafeExamBrowser.UserInterface.Desktop.Controls.ActionCenter
 			NotificationButton.ToolTip = text.Get(TextKey.Notification_ProctoringHandLowered);
 
 			Popup.CustomPopupPlacementCallback = new CustomPopupPlacementCallback(Popup_PlacementCallback);
-			Popup.MouseLeave += (o, args) => Task.Delay(250).ContinueWith(_ => Dispatcher.Invoke(() => Popup.IsOpen = IsMouseOver));
+			Popup.MouseLeave += (o, args) => Task.Delay(250).ContinueWith(_ => Dispatcher.Invoke(() =>
+			{
+				if (Popup.IsOpen && lastOpenedBySpacePress)
+				{
+					return;
+				}
+				Popup.IsOpen = IsMouseOver;
+			}));
 			Popup.Opened += (o, args) => Grid.Background = Brushes.Gray;
-			Popup.Closed += (o, args) => Grid.Background = originalBrush;
+			Popup.Closed += (o, args) =>
+			{
+				Grid.Background = originalBrush;
+				lastOpenedBySpacePress = false;
+			};
 
 			Text.Text = text.Get(TextKey.Notification_ProctoringHandLowered);
 		}
diff --git a/SafeExamBrowser.UserInterface.Desktop/Controls/Taskbar/AudioControl.xaml.cs b/SafeExamBrowser.UserInterface.Desktop/Controls/Taskbar/AudioControl.xaml.cs
index 2341508d..2eafc925 100644
--- a/SafeExamBrowser.UserInterface.Desktop/Controls/Taskbar/AudioControl.xaml.cs
+++ b/SafeExamBrowser.UserInterface.Desktop/Controls/Taskbar/AudioControl.xaml.cs
@@ -48,17 +48,17 @@ namespace SafeExamBrowser.UserInterface.Desktop.Controls.Taskbar
 
 			audio.VolumeChanged += Audio_VolumeChanged;
 			Button.Click += (o, args) => Popup.IsOpen = !Popup.IsOpen;
-			var lastOpenedBySpacePress = DateTime.MinValue;
+			var lastOpenedBySpacePress = false;
 			Button.PreviewKeyDown += (o, args) =>
 			{
 				if (args.Key == System.Windows.Input.Key.Space)                 // for some reason, the popup immediately closes again if opened by a Space Bar key event - as a mitigation, we record the space bar event and leave the popup open for at least 3 seconds
 				{
-					lastOpenedBySpacePress = DateTime.Now;
+					lastOpenedBySpacePress = true;
 				}
 			};
 			Button.MouseLeave += (o, args) => Task.Delay(250).ContinueWith(_ => Dispatcher.Invoke(() =>
 			{
-				if (Popup.IsOpen && (DateTime.Now - lastOpenedBySpacePress).TotalSeconds < 3)
+				if (Popup.IsOpen && lastOpenedBySpacePress)
 				{
 					return;
 				}
@@ -68,7 +68,14 @@ namespace SafeExamBrowser.UserInterface.Desktop.Controls.Taskbar
 			MutedIcon = new XamlIconResource { Uri = new Uri("pack://application:,,,/SafeExamBrowser.UserInterface.Desktop;component/Images/Audio_Muted.xaml") };
 			NoDeviceIcon = new XamlIconResource { Uri = new Uri("pack://application:,,,/SafeExamBrowser.UserInterface.Desktop;component/Images/Audio_NoDevice.xaml") };
 			Popup.CustomPopupPlacementCallback = new CustomPopupPlacementCallback(Popup_PlacementCallback);
-			Popup.MouseLeave += (o, args) => Task.Delay(250).ContinueWith(_ => Dispatcher.Invoke(() => Popup.IsOpen = IsMouseOver));
+			Popup.MouseLeave += (o, args) => Task.Delay(250).ContinueWith(_ => Dispatcher.Invoke(() =>
+			{
+				if (Popup.IsOpen && lastOpenedBySpacePress)
+				{
+					return;
+				}
+				Popup.IsOpen = IsMouseOver;
+			}));
 			Volume.ValueChanged += Volume_ValueChanged;
 
 			Popup.Opened += (o, args) =>
@@ -82,6 +89,7 @@ namespace SafeExamBrowser.UserInterface.Desktop.Controls.Taskbar
 			{
 				Background = originalBrush;
 				Button.Background = originalBrush;
+				lastOpenedBySpacePress = false;
 			};
 
 			if (audio.HasOutputDevice)
diff --git a/SafeExamBrowser.UserInterface.Desktop/Controls/Taskbar/KeyboardLayoutControl.xaml.cs b/SafeExamBrowser.UserInterface.Desktop/Controls/Taskbar/KeyboardLayoutControl.xaml.cs
index f8c1ea00..3f4cf0dc 100644
--- a/SafeExamBrowser.UserInterface.Desktop/Controls/Taskbar/KeyboardLayoutControl.xaml.cs
+++ b/SafeExamBrowser.UserInterface.Desktop/Controls/Taskbar/KeyboardLayoutControl.xaml.cs
@@ -54,24 +54,31 @@ namespace SafeExamBrowser.UserInterface.Desktop.Controls.Taskbar
 					((LayoutsStackPanel.Children[0] as ContentControl).Content as UIElement).Focus();
 				})));
 			};
-			var lastOpenedBySpacePress = DateTime.MinValue;
+			var lastOpenedBySpacePress = false;
 			Button.PreviewKeyDown += (o, args) =>
 			{
 				if (args.Key == System.Windows.Input.Key.Space)                 // for some reason, the popup immediately closes again if opened by a Space Bar key event - as a mitigation, we record the space bar event and leave the popup open for at least 3 seconds
 				{
-					lastOpenedBySpacePress = DateTime.Now;
+					lastOpenedBySpacePress = true;
 				}
 			};
 			Button.MouseLeave += (o, args) => Task.Delay(250).ContinueWith(_ => Dispatcher.Invoke(() =>
 			{
-				if (Popup.IsOpen && (DateTime.Now - lastOpenedBySpacePress).TotalSeconds < 3)
+				if (Popup.IsOpen && lastOpenedBySpacePress)
 				{
 					return;
 				}
 				Popup.IsOpen = Popup.IsMouseOver;
 			}));
 			Popup.CustomPopupPlacementCallback = new CustomPopupPlacementCallback(Popup_PlacementCallback);
-			Popup.MouseLeave += (o, args) => Task.Delay(250).ContinueWith(_ => Dispatcher.Invoke(() => Popup.IsOpen = IsMouseOver));
+			Popup.MouseLeave += (o, args) => Task.Delay(250).ContinueWith(_ => Dispatcher.Invoke(() =>
+			{
+				if (Popup.IsOpen && lastOpenedBySpacePress)
+				{
+					return;
+				}
+				Popup.IsOpen = IsMouseOver;
+			}));
 
 			Popup.Opened += (o, args) =>
 			{
@@ -83,6 +90,7 @@ namespace SafeExamBrowser.UserInterface.Desktop.Controls.Taskbar
 			{
 				Background = originalBrush;
 				Button.Background = originalBrush;
+				lastOpenedBySpacePress = false;
 			};
 		}
 
diff --git a/SafeExamBrowser.UserInterface.Desktop/Controls/Taskbar/NetworkControl.xaml.cs b/SafeExamBrowser.UserInterface.Desktop/Controls/Taskbar/NetworkControl.xaml.cs
index b5f20e52..4cc6793b 100644
--- a/SafeExamBrowser.UserInterface.Desktop/Controls/Taskbar/NetworkControl.xaml.cs
+++ b/SafeExamBrowser.UserInterface.Desktop/Controls/Taskbar/NetworkControl.xaml.cs
@@ -45,25 +45,32 @@ namespace SafeExamBrowser.UserInterface.Desktop.Controls.Taskbar
 			var originalBrush = Button.Background;
 
 			adapter.Changed += () => Dispatcher.InvokeAsync(Update);
-			var lastOpenedBySpacePress = DateTime.MinValue;
+			var lastOpenedBySpacePress = false;
 			Button.PreviewKeyDown += (o, args) =>
 			{
 				if (args.Key == System.Windows.Input.Key.Space)					// for some reason, the popup immediately closes again if opened by a Space Bar key event - as a mitigation, we record the space bar event and leave the popup open for at least 3 seconds
 				{
-					lastOpenedBySpacePress = DateTime.Now;
+					lastOpenedBySpacePress = true;
 				}
 			};
 			Button.Click += (o, args) => Popup.IsOpen = !Popup.IsOpen;
 			Button.MouseLeave += (o, args) => Task.Delay(250).ContinueWith(_ => Dispatcher.Invoke(() =>
 			{
-				if (Popup.IsOpen && (DateTime.Now - lastOpenedBySpacePress).TotalSeconds < 3)
+				if (Popup.IsOpen && lastOpenedBySpacePress)
 				{
 					return;
 				}
 				Popup.IsOpen = Popup.IsMouseOver;
 			}));
 			Popup.CustomPopupPlacementCallback = new CustomPopupPlacementCallback(Popup_PlacementCallback);
-			Popup.MouseLeave += (o, args) => Task.Delay(250).ContinueWith(_ => Dispatcher.Invoke(() => Popup.IsOpen = IsMouseOver));
+			Popup.MouseLeave += (o, args) => Task.Delay(250).ContinueWith(_ => Dispatcher.Invoke(() =>
+			{
+				if (Popup.IsOpen && lastOpenedBySpacePress)
+				{
+					return;
+				}
+				Popup.IsOpen = IsMouseOver;
+			}));
 			WirelessIcon.Child = GetWirelessIcon(0);
 
 			Popup.Opened += (o, args) =>
@@ -84,6 +91,7 @@ namespace SafeExamBrowser.UserInterface.Desktop.Controls.Taskbar
 			{
 				Background = originalBrush;
 				Button.Background = originalBrush;
+				lastOpenedBySpacePress = false;
 			};
 
 			Update();
diff --git a/SafeExamBrowser.UserInterface.Desktop/Controls/Taskbar/RaiseHandControl.xaml.cs b/SafeExamBrowser.UserInterface.Desktop/Controls/Taskbar/RaiseHandControl.xaml.cs
index 6db47fcd..01aeb2ac 100644
--- a/SafeExamBrowser.UserInterface.Desktop/Controls/Taskbar/RaiseHandControl.xaml.cs
+++ b/SafeExamBrowser.UserInterface.Desktop/Controls/Taskbar/RaiseHandControl.xaml.cs
@@ -55,17 +55,17 @@ namespace SafeExamBrowser.UserInterface.Desktop.Controls.Taskbar
 			RaisedIcon = new XamlIconResource { Uri = new Uri("pack://application:,,,/SafeExamBrowser.UserInterface.Desktop;component/Images/Hand_Raised.xaml") };
 			Icon.Content = IconResourceLoader.Load(LoweredIcon);
 
-			var lastOpenedBySpacePress = DateTime.MinValue;
+			var lastOpenedBySpacePress = false;
 			NotificationButton.PreviewKeyDown += (o, args) =>
 			{
 				if (args.Key == System.Windows.Input.Key.Space)                 // for some reason, the popup immediately closes again if opened by a Space Bar key event - as a mitigation, we record the space bar event and leave the popup open for at least 3 seconds
 				{
-					lastOpenedBySpacePress = DateTime.Now;
+					lastOpenedBySpacePress = true;
 				}
 			};
 			NotificationButton.MouseLeave += (o, args) => Task.Delay(250).ContinueWith(_ => Dispatcher.Invoke(() =>
 			{
-				if (Popup.IsOpen && (DateTime.Now - lastOpenedBySpacePress).TotalSeconds < 3)
+				if (Popup.IsOpen && lastOpenedBySpacePress)
 				{
 					return;
 				}
@@ -76,7 +76,14 @@ namespace SafeExamBrowser.UserInterface.Desktop.Controls.Taskbar
 			NotificationButton.ToolTip = text.Get(TextKey.Notification_ProctoringHandLowered);
 
 			Popup.CustomPopupPlacementCallback = new CustomPopupPlacementCallback(Popup_PlacementCallback);
-			Popup.MouseLeave += (o, args) => Task.Delay(250).ContinueWith(_ => Dispatcher.Invoke(() => Popup.IsOpen = IsMouseOver));
+			Popup.MouseLeave += (o, args) => Task.Delay(250).ContinueWith(_ => Dispatcher.Invoke(() =>
+			{
+				if (Popup.IsOpen && lastOpenedBySpacePress)
+				{
+					return;
+				}
+				Popup.IsOpen = IsMouseOver;
+			}));
 			Popup.Opened += (o, args) =>
 			{
 				Background = Brushes.LightGray;
@@ -86,6 +93,7 @@ namespace SafeExamBrowser.UserInterface.Desktop.Controls.Taskbar
 			{
 				Background = originalBrush;
 				NotificationButton.Background = originalBrush;
+				lastOpenedBySpacePress = false;
 			};
 		}
 
diff --git a/SafeExamBrowser.UserInterface.Mobile/Controls/ActionCenter/AudioControl.xaml.cs b/SafeExamBrowser.UserInterface.Mobile/Controls/ActionCenter/AudioControl.xaml.cs
index 14f33945..5df57574 100644
--- a/SafeExamBrowser.UserInterface.Mobile/Controls/ActionCenter/AudioControl.xaml.cs
+++ b/SafeExamBrowser.UserInterface.Mobile/Controls/ActionCenter/AudioControl.xaml.cs
@@ -49,17 +49,17 @@ namespace SafeExamBrowser.UserInterface.Mobile.Controls.ActionCenter
 
 			audio.VolumeChanged += Audio_VolumeChanged;
 			Button.Click += (o, args) => Popup.IsOpen = !Popup.IsOpen;
-			var lastOpenedBySpacePress = DateTime.MinValue;
+			var lastOpenedBySpacePress = false;
 			Button.PreviewKeyDown += (o, args) =>
 			{
 				if (args.Key == System.Windows.Input.Key.Space)                 // for some reason, the popup immediately closes again if opened by a Space Bar key event - as a mitigation, we record the space bar event and leave the popup open for at least 3 seconds
 				{
-					lastOpenedBySpacePress = DateTime.Now;
+					lastOpenedBySpacePress = true;
 				}
 			};
 			Button.MouseLeave += (o, args) => Task.Delay(250).ContinueWith(_ => Dispatcher.Invoke(() =>
 			{
-				if (Popup.IsOpen && (DateTime.Now - lastOpenedBySpacePress).TotalSeconds < 3)
+				if (Popup.IsOpen && lastOpenedBySpacePress)
 				{
 					return;
 				}
@@ -68,9 +68,20 @@ namespace SafeExamBrowser.UserInterface.Mobile.Controls.ActionCenter
 			MuteButton.Click += MuteButton_Click;
 			MutedIcon = new XamlIconResource { Uri = new Uri("pack://application:,,,/SafeExamBrowser.UserInterface.Mobile;component/Images/Audio_Muted.xaml") };
 			NoDeviceIcon = new XamlIconResource { Uri = new Uri("pack://application:,,,/SafeExamBrowser.UserInterface.Mobile;component/Images/Audio_Light_NoDevice.xaml") };
-			Popup.MouseLeave += (o, args) => Task.Delay(250).ContinueWith(_ => Dispatcher.Invoke(() => Popup.IsOpen = IsMouseOver));
+			Popup.MouseLeave += (o, args) => Task.Delay(250).ContinueWith(_ => Dispatcher.Invoke(() =>
+			{
+				if (Popup.IsOpen && lastOpenedBySpacePress)
+				{
+					return;
+				}
+				Popup.IsOpen = IsMouseOver;
+			}));
 			Popup.Opened += (o, args) => Grid.Background = Brushes.Gray;
-			Popup.Closed += (o, args) => Grid.Background = originalBrush;
+			Popup.Closed += (o, args) =>
+			{
+				Grid.Background = originalBrush;
+				lastOpenedBySpacePress = false;
+			};
 			Volume.ValueChanged += Volume_ValueChanged;
 
 			if (audio.HasOutputDevice)
diff --git a/SafeExamBrowser.UserInterface.Mobile/Controls/ActionCenter/KeyboardLayoutControl.xaml.cs b/SafeExamBrowser.UserInterface.Mobile/Controls/ActionCenter/KeyboardLayoutControl.xaml.cs
index c2244737..43912d1d 100644
--- a/SafeExamBrowser.UserInterface.Mobile/Controls/ActionCenter/KeyboardLayoutControl.xaml.cs
+++ b/SafeExamBrowser.UserInterface.Mobile/Controls/ActionCenter/KeyboardLayoutControl.xaml.cs
@@ -51,25 +51,36 @@ namespace SafeExamBrowser.UserInterface.Mobile.Controls.ActionCenter
 					LayoutsStackPanel.Children[0].Focus();
 				}));
 			};
-			var lastOpenedBySpacePress = DateTime.MinValue;
+			var lastOpenedBySpacePress = false;
 			Button.PreviewKeyDown += (o, args) =>
 			{
 				if (args.Key == System.Windows.Input.Key.Space)                 // for some reason, the popup immediately closes again if opened by a Space Bar key event - as a mitigation, we record the space bar event and leave the popup open for at least 3 seconds
 				{
-					lastOpenedBySpacePress = DateTime.Now;
+					lastOpenedBySpacePress = true;
 				}
 			};
 			Button.MouseLeave += (o, args) => Task.Delay(250).ContinueWith(_ => Dispatcher.Invoke(() =>
 			{
-				if (Popup.IsOpen && (DateTime.Now - lastOpenedBySpacePress).TotalSeconds < 3)
+				if (Popup.IsOpen && lastOpenedBySpacePress)
 				{
 					return;
 				}
 				Popup.IsOpen = Popup.IsMouseOver;
 			}));
-			Popup.MouseLeave += (o, args) => Task.Delay(250).ContinueWith(_ => Dispatcher.Invoke(() => Popup.IsOpen = IsMouseOver));
+			Popup.MouseLeave += (o, args) => Task.Delay(250).ContinueWith(_ => Dispatcher.Invoke(() =>
+			{
+				if (Popup.IsOpen && lastOpenedBySpacePress)
+				{
+					return;
+				}
+				Popup.IsOpen = IsMouseOver;
+			}));
 			Popup.Opened += (o, args) => Grid.Background = Brushes.Gray;
-			Popup.Closed += (o, args) => Grid.Background = originalBrush;
+			Popup.Closed += (o, args) =>
+			{
+				Grid.Background = originalBrush;
+				lastOpenedBySpacePress = false;
+			};
 		}
 
 		private void Keyboard_LayoutChanged(IKeyboardLayout layout)
diff --git a/SafeExamBrowser.UserInterface.Mobile/Controls/ActionCenter/NetworkControl.xaml.cs b/SafeExamBrowser.UserInterface.Mobile/Controls/ActionCenter/NetworkControl.xaml.cs
index 85da000e..349418b4 100644
--- a/SafeExamBrowser.UserInterface.Mobile/Controls/ActionCenter/NetworkControl.xaml.cs
+++ b/SafeExamBrowser.UserInterface.Mobile/Controls/ActionCenter/NetworkControl.xaml.cs
@@ -45,23 +45,30 @@ namespace SafeExamBrowser.UserInterface.Mobile.Controls.ActionCenter
 
 			adapter.Changed += () => Dispatcher.InvokeAsync(Update);
 			Button.Click += (o, args) => Popup.IsOpen = !Popup.IsOpen;
-			var lastOpenedBySpacePress = DateTime.MinValue;
+			var lastOpenedBySpacePress = false;
 			Button.PreviewKeyDown += (o, args) =>
 			{
 				if (args.Key == System.Windows.Input.Key.Space)                 // for some reason, the popup immediately closes again if opened by a Space Bar key event - as a mitigation, we record the space bar event and leave the popup open for at least 3 seconds
 				{
-					lastOpenedBySpacePress = DateTime.Now;
+					lastOpenedBySpacePress = true;
 				}
 			};
 			Button.MouseLeave += (o, args) => Task.Delay(250).ContinueWith(_ => Dispatcher.Invoke(() =>
 			{
-				if (Popup.IsOpen && (DateTime.Now - lastOpenedBySpacePress).TotalSeconds < 3)
+				if (Popup.IsOpen && lastOpenedBySpacePress)
 				{
 					return;
 				}
 				Popup.IsOpen = Popup.IsMouseOver;
 			}));
-			Popup.MouseLeave += (o, args) => Task.Delay(250).ContinueWith(_ => Dispatcher.Invoke(() => Popup.IsOpen = IsMouseOver));
+			Popup.MouseLeave += (o, args) => Task.Delay(250).ContinueWith(_ => Dispatcher.Invoke(() =>
+			{
+				if (Popup.IsOpen && lastOpenedBySpacePress)
+				{
+					return;
+				}
+				Popup.IsOpen = IsMouseOver;
+			}));
 			Popup.Opened += (o, args) =>
 			{
 				Grid.Background = Brushes.Gray;
@@ -74,7 +81,11 @@ namespace SafeExamBrowser.UserInterface.Mobile.Controls.ActionCenter
 					}
 				}));
 			};
-			Popup.Closed += (o, args) => Grid.Background = originalBrush;
+			Popup.Closed += (o, args) =>
+			{
+				Grid.Background = originalBrush;
+				lastOpenedBySpacePress = false;
+			};
 			WirelessIcon.Child = GetWirelessIcon(0);
 
 			Update();
diff --git a/SafeExamBrowser.UserInterface.Mobile/Controls/ActionCenter/RaiseHandControl.xaml.cs b/SafeExamBrowser.UserInterface.Mobile/Controls/ActionCenter/RaiseHandControl.xaml.cs
index e7479b8d..b07add7f 100644
--- a/SafeExamBrowser.UserInterface.Mobile/Controls/ActionCenter/RaiseHandControl.xaml.cs
+++ b/SafeExamBrowser.UserInterface.Mobile/Controls/ActionCenter/RaiseHandControl.xaml.cs
@@ -55,17 +55,17 @@ namespace SafeExamBrowser.UserInterface.Mobile.Controls.ActionCenter
 			RaisedIcon = new XamlIconResource { Uri = new Uri("pack://application:,,,/SafeExamBrowser.UserInterface.Desktop;component/Images/Hand_Raised.xaml") };
 			Icon.Content = IconResourceLoader.Load(LoweredIcon);
 
-			var lastOpenedBySpacePress = DateTime.MinValue;
+			var lastOpenedBySpacePress = false;
 			NotificationButton.PreviewKeyDown += (o, args) =>
 			{
 				if (args.Key == System.Windows.Input.Key.Space)                 // for some reason, the popup immediately closes again if opened by a Space Bar key event - as a mitigation, we record the space bar event and leave the popup open for at least 3 seconds
 				{
-					lastOpenedBySpacePress = DateTime.Now;
+					lastOpenedBySpacePress = true;
 				}
 			};
 			NotificationButton.MouseLeave += (o, args) => Task.Delay(250).ContinueWith(_ => Dispatcher.Invoke(() =>
 			{
-				if (Popup.IsOpen && (DateTime.Now - lastOpenedBySpacePress).TotalSeconds < 3)
+				if (Popup.IsOpen && lastOpenedBySpacePress)
 				{
 					return;
 				}
@@ -76,9 +76,20 @@ namespace SafeExamBrowser.UserInterface.Mobile.Controls.ActionCenter
 			NotificationButton.ToolTip = text.Get(TextKey.Notification_ProctoringHandLowered);
 
 			Popup.CustomPopupPlacementCallback = new CustomPopupPlacementCallback(Popup_PlacementCallback);
-			Popup.MouseLeave += (o, args) => Task.Delay(250).ContinueWith(_ => Dispatcher.Invoke(() => Popup.IsOpen = IsMouseOver));
+			Popup.MouseLeave += (o, args) => Task.Delay(250).ContinueWith(_ => Dispatcher.Invoke(() =>
+			{
+				if (Popup.IsOpen && lastOpenedBySpacePress)
+				{
+					return;
+				}
+				Popup.IsOpen = IsMouseOver;
+			}));
 			Popup.Opened += (o, args) => Grid.Background = Brushes.Gray;
-			Popup.Closed += (o, args) => Grid.Background = originalBrush;
+			Popup.Closed += (o, args) =>
+			{
+				Grid.Background = originalBrush;
+				lastOpenedBySpacePress = false;
+			};
 
 			Text.Text = text.Get(TextKey.Notification_ProctoringHandLowered);
 		}
diff --git a/SafeExamBrowser.UserInterface.Mobile/Controls/Taskbar/AudioControl.xaml.cs b/SafeExamBrowser.UserInterface.Mobile/Controls/Taskbar/AudioControl.xaml.cs
index 4ecc1938..ec1b72a8 100644
--- a/SafeExamBrowser.UserInterface.Mobile/Controls/Taskbar/AudioControl.xaml.cs
+++ b/SafeExamBrowser.UserInterface.Mobile/Controls/Taskbar/AudioControl.xaml.cs
@@ -48,17 +48,17 @@ namespace SafeExamBrowser.UserInterface.Mobile.Controls.Taskbar
 
 			audio.VolumeChanged += Audio_VolumeChanged;
 			Button.Click += (o, args) => Popup.IsOpen = !Popup.IsOpen;
-			var lastOpenedBySpacePress = DateTime.MinValue;
+			var lastOpenedBySpacePress = false;
 			Button.PreviewKeyDown += (o, args) =>
 			{
 				if (args.Key == System.Windows.Input.Key.Space)                 // for some reason, the popup immediately closes again if opened by a Space Bar key event - as a mitigation, we record the space bar event and leave the popup open for at least 3 seconds
 				{
-					lastOpenedBySpacePress = DateTime.Now;
+					lastOpenedBySpacePress = true;
 				}
 			};
 			Button.MouseLeave += (o, args) => Task.Delay(250).ContinueWith(_ => Dispatcher.Invoke(() =>
 			{
-				if (Popup.IsOpen && (DateTime.Now - lastOpenedBySpacePress).TotalSeconds < 3)
+				if (Popup.IsOpen && lastOpenedBySpacePress)
 				{
 					return;
 				}
@@ -68,7 +68,14 @@ namespace SafeExamBrowser.UserInterface.Mobile.Controls.Taskbar
 			MutedIcon = new XamlIconResource { Uri = new Uri("pack://application:,,,/SafeExamBrowser.UserInterface.Mobile;component/Images/Audio_Muted.xaml") };
 			NoDeviceIcon = new XamlIconResource { Uri = new Uri("pack://application:,,,/SafeExamBrowser.UserInterface.Mobile;component/Images/Audio_NoDevice.xaml") };
 			Popup.CustomPopupPlacementCallback = new CustomPopupPlacementCallback(Popup_PlacementCallback);
-			Popup.MouseLeave += (o, args) => Task.Delay(250).ContinueWith(_ => Dispatcher.Invoke(() => Popup.IsOpen = IsMouseOver));
+			Popup.MouseLeave += (o, args) => Task.Delay(250).ContinueWith(_ => Dispatcher.Invoke(() =>
+			{
+				if (Popup.IsOpen && lastOpenedBySpacePress)
+				{
+					return;
+				}
+				Popup.IsOpen = IsMouseOver;
+			}));
 			Volume.ValueChanged += Volume_ValueChanged;
 
 			Popup.Opened += (o, args) =>
@@ -82,6 +89,7 @@ namespace SafeExamBrowser.UserInterface.Mobile.Controls.Taskbar
 			{
 				Background = originalBrush;
 				Button.Background = originalBrush;
+				lastOpenedBySpacePress = false;
 			};
 
 			if (audio.HasOutputDevice)
diff --git a/SafeExamBrowser.UserInterface.Mobile/Controls/Taskbar/KeyboardLayoutControl.xaml.cs b/SafeExamBrowser.UserInterface.Mobile/Controls/Taskbar/KeyboardLayoutControl.xaml.cs
index e126ac50..5195ccf1 100644
--- a/SafeExamBrowser.UserInterface.Mobile/Controls/Taskbar/KeyboardLayoutControl.xaml.cs
+++ b/SafeExamBrowser.UserInterface.Mobile/Controls/Taskbar/KeyboardLayoutControl.xaml.cs
@@ -54,24 +54,31 @@ namespace SafeExamBrowser.UserInterface.Mobile.Controls.Taskbar
 					((LayoutsStackPanel.Children[0] as ContentControl).Content as UIElement).Focus();
 				})));
 			};
-			var lastOpenedBySpacePress = DateTime.MinValue;
+			var lastOpenedBySpacePress = false;
 			Button.PreviewKeyDown += (o, args) =>
 			{
 				if (args.Key == System.Windows.Input.Key.Space)                 // for some reason, the popup immediately closes again if opened by a Space Bar key event - as a mitigation, we record the space bar event and leave the popup open for at least 3 seconds
 				{
-					lastOpenedBySpacePress = DateTime.Now;
+					lastOpenedBySpacePress = true;
 				}
 			};
 			Button.MouseLeave += (o, args) => Task.Delay(250).ContinueWith(_ => Dispatcher.Invoke(() =>
 			{
-				if (Popup.IsOpen && (DateTime.Now - lastOpenedBySpacePress).TotalSeconds < 3)
+				if (Popup.IsOpen && lastOpenedBySpacePress)
 				{
 					return;
 				}
 				Popup.IsOpen = Popup.IsMouseOver;
 			}));
 			Popup.CustomPopupPlacementCallback = new CustomPopupPlacementCallback(Popup_PlacementCallback);
-			Popup.MouseLeave += (o, args) => Task.Delay(250).ContinueWith(_ => Dispatcher.Invoke(() => Popup.IsOpen = IsMouseOver));
+			Popup.MouseLeave += (o, args) => Task.Delay(250).ContinueWith(_ => Dispatcher.Invoke(() =>
+			{
+				if (Popup.IsOpen && lastOpenedBySpacePress)
+				{
+					return;
+				}
+				Popup.IsOpen = IsMouseOver;
+			}));
 
 			Popup.Opened += (o, args) =>
 			{
@@ -83,6 +90,7 @@ namespace SafeExamBrowser.UserInterface.Mobile.Controls.Taskbar
 			{
 				Background = originalBrush;
 				Button.Background = originalBrush;
+				lastOpenedBySpacePress = false;
 			};
 		}
 
diff --git a/SafeExamBrowser.UserInterface.Mobile/Controls/Taskbar/NetworkControl.xaml.cs b/SafeExamBrowser.UserInterface.Mobile/Controls/Taskbar/NetworkControl.xaml.cs
index 284b67db..7b21a7e3 100644
--- a/SafeExamBrowser.UserInterface.Mobile/Controls/Taskbar/NetworkControl.xaml.cs
+++ b/SafeExamBrowser.UserInterface.Mobile/Controls/Taskbar/NetworkControl.xaml.cs
@@ -46,24 +46,31 @@ namespace SafeExamBrowser.UserInterface.Mobile.Controls.Taskbar
 
 			adapter.Changed += () => Dispatcher.InvokeAsync(Update);
 			Button.Click += (o, args) => Popup.IsOpen = !Popup.IsOpen;
-			var lastOpenedBySpacePress = DateTime.MinValue;
+			var lastOpenedBySpacePress = false;
 			Button.PreviewKeyDown += (o, args) =>
 			{
 				if (args.Key == System.Windows.Input.Key.Space)                 // for some reason, the popup immediately closes again if opened by a Space Bar key event - as a mitigation, we record the space bar event and leave the popup open for at least 3 seconds
 				{
-					lastOpenedBySpacePress = DateTime.Now;
+					lastOpenedBySpacePress = true;
 				}
 			};
 			Button.MouseLeave += (o, args) => Task.Delay(250).ContinueWith(_ => Dispatcher.Invoke(() =>
 			{
-				if (Popup.IsOpen && (DateTime.Now - lastOpenedBySpacePress).TotalSeconds < 3)
+				if (Popup.IsOpen && lastOpenedBySpacePress)
 				{
 					return;
 				}
 				Popup.IsOpen = Popup.IsMouseOver;
 			}));
 			Popup.CustomPopupPlacementCallback = new CustomPopupPlacementCallback(Popup_PlacementCallback);
-			Popup.MouseLeave += (o, args) => Task.Delay(250).ContinueWith(_ => Dispatcher.Invoke(() => Popup.IsOpen = IsMouseOver));
+			Popup.MouseLeave += (o, args) => Task.Delay(250).ContinueWith(_ => Dispatcher.Invoke(() =>
+			{
+				if (Popup.IsOpen && lastOpenedBySpacePress)
+				{
+					return;
+				}
+				Popup.IsOpen = IsMouseOver;
+			}));
 			WirelessIcon.Child = GetWirelessIcon(0);
 
 			Popup.Opened += (o, args) =>
@@ -84,6 +91,7 @@ namespace SafeExamBrowser.UserInterface.Mobile.Controls.Taskbar
 			{
 				Background = originalBrush;
 				Button.Background = originalBrush;
+				lastOpenedBySpacePress = false;
 			};
 
 			Update();
diff --git a/SafeExamBrowser.UserInterface.Mobile/Controls/Taskbar/RaiseHandControl.xaml.cs b/SafeExamBrowser.UserInterface.Mobile/Controls/Taskbar/RaiseHandControl.xaml.cs
index 79d2ae84..68772cb3 100644
--- a/SafeExamBrowser.UserInterface.Mobile/Controls/Taskbar/RaiseHandControl.xaml.cs
+++ b/SafeExamBrowser.UserInterface.Mobile/Controls/Taskbar/RaiseHandControl.xaml.cs
@@ -55,17 +55,17 @@ namespace SafeExamBrowser.UserInterface.Mobile.Controls.Taskbar
 			RaisedIcon = new XamlIconResource { Uri = new Uri("pack://application:,,,/SafeExamBrowser.UserInterface.Desktop;component/Images/Hand_Raised.xaml") };
 			Icon.Content = IconResourceLoader.Load(LoweredIcon);
 
-			var lastOpenedBySpacePress = DateTime.MinValue;
+			var lastOpenedBySpacePress = false;
 			NotificationButton.PreviewKeyDown += (o, args) =>
 			{
 				if (args.Key == System.Windows.Input.Key.Space)                 // for some reason, the popup immediately closes again if opened by a Space Bar key event - as a mitigation, we record the space bar event and leave the popup open for at least 3 seconds
 				{
-					lastOpenedBySpacePress = DateTime.Now;
+					lastOpenedBySpacePress = true;
 				}
 			};
 			NotificationButton.MouseLeave += (o, args) => Task.Delay(250).ContinueWith(_ => Dispatcher.Invoke(() =>
 			{
-				if (Popup.IsOpen && (DateTime.Now - lastOpenedBySpacePress).TotalSeconds < 3)
+				if (Popup.IsOpen && lastOpenedBySpacePress)
 				{
 					return;
 				}
@@ -76,7 +76,14 @@ namespace SafeExamBrowser.UserInterface.Mobile.Controls.Taskbar
 			NotificationButton.ToolTip = text.Get(TextKey.Notification_ProctoringHandLowered);
 
 			Popup.CustomPopupPlacementCallback = new CustomPopupPlacementCallback(Popup_PlacementCallback);
-			Popup.MouseLeave += (o, args) => Task.Delay(250).ContinueWith(_ => Dispatcher.Invoke(() => Popup.IsOpen = IsMouseOver));
+			Popup.MouseLeave += (o, args) => Task.Delay(250).ContinueWith(_ => Dispatcher.Invoke(() =>
+			{
+				if (Popup.IsOpen && lastOpenedBySpacePress)
+				{
+					return;
+				}
+				Popup.IsOpen = IsMouseOver;
+			}));
 			Popup.Opened += (o, args) =>
 			{
 				Background = Brushes.LightGray;
@@ -87,6 +94,7 @@ namespace SafeExamBrowser.UserInterface.Mobile.Controls.Taskbar
 			{
 				Background = originalBrush;
 				NotificationButton.Background = originalBrush;
+				lastOpenedBySpacePress = false;
 			};
 		}