I've been having the same issue. It happens with every game I've launched, some of which are older versions of RenPy.
It's incredibly frustrating on games that have a lot of paths or store info to the persistent save instead of a local one -like, sure, that's a quick way to store the MC name for replays, but now if I quit your game, I come back to find my name is "Main Character"
In case it matters, it's a Windows 11 laptop and only has a single hard drive / partition. It did not have this problem with RenPy games before a few months ago.