Guilty Gear Isuka (267900)

Compatibility Report

• Name of the game with compatibility issues: Guilty Gear Isuka
• Steam AppID of the game: 267900

System Information

• GPU: Steam Deck (Van Gogh)
• Driver/LLVM version: Mesa 22.0.0
• Kernel version: 5.13.0-valve10.1-1-neptune-02144-g7fffaf925dfb
• Link to full system information report as Gist:
• Proton version: Experimental
• steam-267900.log

I confirm:

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

Symptoms

Graphics are completely broken; the main menus are solid black/white screens, and navigating into a match produces half-rendered UI elements and a bunch of colorful cubes.

Reproduction

• Attempt to play Guilty Gear Isuka with any version of Proton after 4.11-13. The graphics (minus intro videos) render fine in 4.11-13, so a major regression might've happened.

The report includes steam-267900.log and identifies Proton Experimental plus 4.11-13 as a working baseline. Reproduce the broken graphics on Steam Deck, inspect the attached log, and compare behavior across those Proton versions; done means the game's menus and match UI render correctly.