Compatibility Report

• Name of the game with compatibility issues: Glassbreakers: Champions of Moss
• Steam AppID of the game: 887330

System Information

• GPU: RX 7900 XTX
• Video driver version: 25.3.2
• Kernel version: 6.18.2-273-tkg-eevdf
• Link to full system information report as Gist: https://gist.github.com/Patola/9e8407c5e943fc34cbdf2a9c1d48a0eb
• Proton version: 8.0-5, 9.0-4, 10.0-3, Experimental bleeding-edge always removing the prefix between attempts

I confirm:

• [X] that I haven't found an existing compatibility report for this game.
• [X] that I have checked whether there are updates for my system available.

Symptoms

Running through Steam Link on Meta Quest 3.
Game doesn't start.

• In proton 8.0-5, it crashes before doing anything. (I tested proton 8 because there is a single report on protondb saying it worked on 8.0-4 on Valve Index)
• In proton 9.0-4, it gives an unreal dialog message
• In proton 10.0-3, it gives an assert dialog, then the unreal dialog message:

• In proton experimental bleeding-edge, it crashes Steam Link / SteamVR:

Reproduction

• Connect Steam Link to the PC in the headset
• Start the game

Proton logs

Proton 8.0-5, PROTON_LOG=1 %command%:

steam-887330-proton805.zip

Proton 9.0-4, PROTON_LOG=1 %command%:

steam-887330-proton9.zip

Proton 9.0-4, PROTON_LOG=+vrclient,+openxr,+file %command%:

steam-887330-proton904-vrclient-openxr-file.zip

Proton 10.0-3, PROTON_LOG=1 %command%:

steam-887330-proton10.zip

Proton 10.0-3, PROTON_LOG=+vrclient,+openxr,+file %command%:

steam-887330-proton1003-vrclient-openxr-file.zip

Proton Experimental branch bleeding-edge, PROTON_LOG=1 %command%:

steam-887330-proton-experimental.zip

Proton Experimental branch bleeding-edge, PROTON_LOG=+vrclient,+openxr,+file %command%:

steam-887330-proton-experimental-openxr-vrclient-file.zip