The top, "File, Edit..." menu is gone from all my KDE program windows. Not sure what I changed.
I tried ctrl+m, looked in EVERY setting I can find for days but can not find a way to get my File menu back.
Best I can do is add a an item to the Title Bar buttons for, "Application Menu" which is ok but not what I want.
It's forcing applications to use a common menu up in the top left of the main screen (like what Macs do) - problem is, it doesn't work for all apps (i.e. OBS Studio) - I'm trying to find the answer too - annoying!