This is the tracker for regular upstream Proton so i would suggest to try with that. Or report the issue at either the GE-Proton or UMU-Proton tracker instead.
@Blisto91 the issue was resolved.
Annoyingly, steam decided to update just as i rebooted the PC, mid competitive in CS2, and worse, I didn't have dependencies updated so yeah. a simple paru -Syu fixed it
ge-proton10-34x1 2026-07proton 9.0-4ex1 2026-07
Arch Linux (64-bit), Kernel driver MesaRadv 26.1.1.
Aparently proton: Upgrading prefix from GE-Proton10-34 to UMU-Proton-9.0-4e (/home/micron/.local/share/Steam/steamapps/compatdata/0/)
Proton: Prefix has an invalid version?! You may want to back up user files and delete this prefix.
I dont want an update! i wanna game!!
the logs:
https://pastebin.com/KCzXm4gd