I think you still can. Did a custom party setup (starting BG3.exe 4 times) and after that noticed that there are still profiles created, named "Debug_Client_Profile_#" .
This is as far as I remember, the exact same behaviour as before.
That's because you were the host and you also made all the other clients. You can't make multiple characters in someone else's game because there is only 1 Profile now.
