Make sure quick switch state reset

Author: Jack251970

Flow.Launcher/ViewModel/MainViewModel.cs

@@ -1936,11 +1936,16 @@ public async Task SetupQuickSwitchAsync(nint handle)
 
         public async void ResetQuickSwitch()
         {
-            if (DialogWindowHandle == nint.Zero) return;
+            // Cache original dialog window handle
+            var dialogWindowHandle = DialogWindowHandle;
 
+            // Reset the quick switch state
             DialogWindowHandle = nint.Zero;
             _isQuickSwitch = false;
 
+            // If dialog window handle is not set, we should not reset the main window visibility
+            if (dialogWindowHandle == nint.Zero) return;
+
             if (_previousMainWindowVisibilityStatus != MainWindowVisibilityStatus)
             {
                 // Show or hide to change visibility