In v2_develop the `MenuBar` is not showing in ContextMenus scenario.

[BDisp]

This is because Window is set for Overlapped/Movable/Sizable.

Please file a bug for me to make it so arrange mode is disabled if Top.

Originally posted by @tig in https://github.com/gui-cs/Terminal.Gui/issues/3749#issuecomment-2379902231