Greetings to All - My first post on this forum:

The menu bar in Photoshop (i.e. File - Edit...etc.) is corrupted somehow. I can click on File and Edit and the dropdown works fine, but when clicking any other item, the dropdown flashes on and off and then a completely different dropdown appears. I am unable to use any option in the desired dropdowns. This occurs only in Photoshop and Luminar Neo (both image editing apps), and not in any other image editing apps.

Perhaps related, shortly before this happened I tweaked font and image sizes using Windows Key + U. This may have caused it, but returning those settings to default did not solve the issue.

I have searched this and other forums but have yet to find a solution. I will be grateful for any help!

Windows 10, latest update.