UI: I may be stupid.

src/Ryujinx/UI/Views/Main/MainMenuBarView.axaml.cs

@@ -95,6 +95,7 @@ namespace Ryujinx.Ava.UI.Views.Main
 
             if (VisualRoot is MainWindow window)
             {
+                Window = window;
                 DataContext = ViewModel = window.ViewModel;
             }
         }

src/Ryujinx/UI/Windows/MainWindow.axaml.cs

@@ -80,8 +80,8 @@ namespace Ryujinx.Ava.UI.Windows
 
             ViewModel.Title = App.FormatTitle();
 
-            //TitleBar.ExtendsContentIntoTitleBar = true;
-            //TitleBar.TitleBarHitTestType = TitleBarHitTestType.Complex;
+            TitleBar.ExtendsContentIntoTitleBar = true;
+            TitleBar.TitleBarHitTestType = TitleBarHitTestType.Complex;
             
 
             // NOTE: Height of MenuBar and StatusBar is not usable here, since it would still be 0 at this point.