Merge pull request #12821 from soosr/release-fix-hide-mac

WalletWasabi.Fluent/ApplicationStateManager.cs

@@ -168,7 +168,10 @@ private void ActivatableLifetimeOnDeactivated(object? sender, ActivatedEventArgs
 			case ActivationKind.Background:
 				if (this is IMainWindowService service)
 				{
-					service.Hide();
+					if (_lifetime.MainWindow is not null)
+					{
+						service.Hide();
+					}
 				}
 				break;
 		}