Hi! I don't know if you are still having this problem but I did too. I figured out I had a double-up of mods in my computers (C:) and (D:) drives. Once I deleted everything from my (C:) Drive and updated my Steam account to only save in my (D:) drive, the problem went away!
I also checked that all the mods in my BG3 Mod Manager were from (D:) drive only too! Before saving.
Hopefully, this can help you too!
So that's what potentially causes it, good to know.
I have the same issue, it doesn't block you accessing the menus though (at least it doesn't for me)... just hit ENTER twice. Annoying sure, but until I get my mods sorted it works at least.
