Steam suddenly refuses to launch Proton games and no logs are generated

Hey. I've run out of google-foo. Basically, any game I try to launch on Steam using Proton just straight up refuses to launch.

1) The drives the games are installed on are BTRFS
2) I can confirm that last week I could successfully launch games
3) Adding PROTON_LOG=1 %command% to the launch options does not generate any log file anywhere (used FSearch to check everywhere)
4) Launching steam through the terminal to observe any errors just shows
-----------------will attach the output in the next message-----------------
5) Launching native games that are on the same drive works just fine. Trying to launch the same game with Proton fails
6) Moving the game to the drive Bazzite's installed on doesn't fix the issue
7) Tried to launch steam games using Lutris, also doesn't work. I see the "play" button on steam flash from "CANCEL" back to "PLAY" within seconds
8) User/group ownership for the steam library is correctly set to my user and group but I chown-ed it anyway just in case and it didn't change anything

Any ideas? I haven't tried to play a game since last week so I can't exactly know when the issue started
Solution
Fully exit steam (it should not be in system tray) then run cd ~/.local/share followed by mv Steam Steam.bak.
Steam may not start with capital S, idr how it was. try as "steam" if "Steam" doesn't work
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