Someone on the community hub thread it has something to do with webview2 being borked.
https://gitlab.winehq.org/wine/wine/-/merge_requests/7032
Maybe this might do something, I dunno
Still doesn't seem to load up with proton Experimental bleeding edge.
Edit: If I run it in desktop mode, i see a window briefly appear and vanish in half a second, nothing else happens until I press stop playing.
Still the same issue with latest Experimental. At least it has a working native Linux version
proton experimentalx1 2025-04
Compatibility Report
System Information
I confirm:
Symptoms
Game crashes on startup
steam-3081830.log
Reproduction
Start the game.