The following issue was experienced on a desktop PC.
Upon a reboot, after using the system for a few days, I was unable to log in into my account using SDDM. Bazzite would not accept my password.
The only work around was to go into tty3 and manually log in with the root account to reset my user password. I was then able to log in to my account while in command line, but again, upon returning to the SDDM, I was unable to log in as it would say my password was incorrect. Rebooting did not fix or resolve the issue. Going back to a previous instance did not work either. Going to try running Bluefin for a few days and see if this issue reoccurs.