Window position settings now check if its inside the bounds of the current screens before saving the X & Y values

StabilityMatrix.Avalonia/App.axaml.cs

@@ -165,12 +165,16 @@ public sealed class App : Application
         
         mainWindow.Closing += (_, _) =>
         {
+            var validWindowPosition =
+                mainWindow.Screens.All.Any(screen => screen.Bounds.Contains(mainWindow.Position));
+
             settingsManager.Transaction(s =>
-                {
-                    s.WindowSettings = new WindowSettings(
-                        mainWindow.Width, mainWindow.Height, 
-                        mainWindow.Position.X, mainWindow.Position.Y);
-                }, ignoreMissingLibraryDir: true);
+            {
+                s.WindowSettings = new WindowSettings(
+                    mainWindow.Width, mainWindow.Height,
+                    validWindowPosition ? mainWindow.Position.X : 0,
+                    validWindowPosition ? mainWindow.Position.Y : 0);
+            }, ignoreMissingLibraryDir: true);
         };
         mainWindow.Closed += (_, _) => Shutdown();