I would agree if the values of the "unlocked visibility" settings wouldn't be saved, but they do. And I can see in the config folder the "cura.cfg" file gets changed.
Is there another folder beside /home/user/.config/cura ?
I just downloaded 4.6.0 (a version I never had, 4.6.1 was the first on my PC) and there the problem also does not occur, so it really starts with 4.6.2.
Well, I will open an issue on github then, if that's the way to go.
Thanks for your reply.