Added that canvas is dimmed when splitview is open

Views/MainWindow.axaml.cs

@@ -21,6 +21,7 @@ public partial class MainWindow : Window
         Topmost = false;
     }
 
+    // MVVM like implementations burst the bounds -> implemented the old school way
     private async void SaveFileButton_Clicked(object sender, RoutedEventArgs args)
     {
         TopLevel? topLevel = TopLevel.GetTopLevel(this);