PS5 couch co op bugs

Bug with mismatched campaign progression characters. If player 2 is lower level character, intially loaded to town with lower level quest active. Attempted to enter grelwood> stuck at loading screen. Reloaded characters and returned immediately to grelwood infinite loading screen. Making lower level character P1 worked.
Then in cemetary P1 collected both keys to unlock gate (P2 already completed mission previously). P1 unable to advance quest being told to collect both keys to unlock.

Logged out. Log in single player to advance quest then log out and log in co op again worked

Apologies if mobile formatting is terrible