Fix: Fixed highlights flickering after closing the properties window

src/Files.App/Helpers/FilePropertiesHelpers.cs

@@ -85,7 +85,10 @@ public static async Task OpenPropertiesWindowAsync(object item, IShellPage assoc
 				appWindow.SetIcon(LogoPath);
 
 				if (frame.Content is Views.Properties.MainPropertiesPage properties)
+				{
+					properties.Window = propertiesWindow;
 					properties.AppWindow = appWindow;
+				}
 
 				appWindow.Show();
 

src/Files.App/Views/Properties/MainPropertiesPage.xaml.cs

@@ -40,6 +40,7 @@ public sealed partial class MainPropertiesPage : Page
 		public SettingsViewModel AppSettings
 			=> App.AppSettings;
 
+		public Window Window;
 		public AppWindow AppWindow;
 
 		public ObservableCollection<SquareNavViewItem> NavViewItems { get; set; }
@@ -308,7 +309,7 @@ private void Page_KeyDown(object sender, KeyRoutedEventArgs e)
 		private void ClosePage()
 		{
 			if (_usingWinUI)
-				AppWindow.Destroy();
+				Window.Close(); // AppWindow.Destroy() doesn't seem to work well. (#11461)
 			else
 				_propertiesDialog?.Hide();
 		}

src/Files.App/Views/Properties/SecurityAdvancedPage.xaml.cs

@@ -28,6 +28,7 @@ public sealed partial class SecurityAdvancedPage : Page
 
 		public SecurityViewModel ViewModel { get; set; }
 
+		public Window window;
 		public AppWindow appWindow;
 
 		public SecurityAdvancedPage()
@@ -125,7 +126,7 @@ private async void OKButton_Click(object sender, RoutedEventArgs e)
 			{
 				if (ViewModel.SetFilePermissions())
 				{
-					appWindow.Destroy();
+					window.Close(); // AppWindow.Destroy() doesn't seem to work well. (#11461)
 				}
 			}
 			else
@@ -137,7 +138,7 @@ private async void CancelButton_Click(object sender, RoutedEventArgs e)
 		{
 			if (ApiInformation.IsApiContractPresent("Windows.Foundation.UniversalApiContract", 8))
 			{
-				appWindow.Destroy();
+				window.Close(); // AppWindow.Destroy() doesn't seem to work well. (#11461)
 			}
 			else
 			{
@@ -150,7 +151,7 @@ private async void Page_KeyDown(object sender, KeyRoutedEventArgs e)
 			{
 				if (ApiInformation.IsApiContractPresent("Windows.Foundation.UniversalApiContract", 8))
 				{
-					appWindow.Destroy();
+					window.Close(); // AppWindow.Destroy() doesn't seem to work well. (#11461)
 				}
 				else
 				{
@@ -183,4 +184,4 @@ private void ListView_SelectionChanged(object sender, SelectionChangedEventArgs
 			}
 		}
 	}
-}
+}

src/Files.App/Views/Properties/SecurityPage.xaml.cs

@@ -101,7 +101,10 @@ private void OpenAdvancedProperties()
 					// Set content
 					propertiesWindow.Content = frame;
 					if (frame.Content is SecurityAdvancedPage properties)
+					{
+						properties.window = propertiesWindow;
 						properties.appWindow = appWindow;
+					}
 
 					// Set min size
 					propertiesWindow.MinWidth = 850;