Menupop showing on the wrong Monitor when drag Mainwindow from start-moitor

The menu popup from the main menu is displayed in the wrong monitor when dragging the window to a monitor other than the start monitor.

To reproduce:

Create a QT widget application with main menu. Start the application. Drag the window to another monitor. Selecting a menu item from the main menu: The menu popup appears in the original startup monitor, not in the monitor in which the window is located.