Hi Mark,
There have been several reports of this happening - Top Menu Locked Up - #17 by Sailwave.
Neither Jon or I can replicate the problem on hour Windows 11 devices. Current thinking is some other application is grabbing the focus. Some users have had success with holding down the CTL Key and then selecting the required menu bar option.
Please keep us informed as all information gathered might lead to a resolution.
Out of interest what make of PC and software installed.
Kind regards,
Huw