Fixed potential case when leaving fullscreen with mouse autohide

Author: u8sand

src/ui/mainwindow.cpp

@@ -1313,6 +1313,7 @@ void MainWindow::FullScreen(bool fs)
         ui->playbackLayoutWidget->setVisible(true);
         setMouseTracking(false); // stop registering mouse move event
         setCursor(QCursor(Qt::ArrowCursor)); // show cursor
+        autohide->stop();
     }
 }