Merge pull request #1593 from Flow-Launcher/fixSecondStart

Fix Second Run not trigger the first run window to show up

Author: jjw24

Flow.Launcher/App.xaml.cs

@@ -183,7 +183,7 @@ public void Dispose()
 
         public void OnSecondAppStarted()
         {
-            Current.MainWindow.Show();
+            _mainVM.Show();
         }
     }
 }