The Alchemist's House (appid 1208520)

Compatibility Report

• Name of the game with compatibility issues: The Alchemist's House (a free game)
• Steam AppID of the game: 1208520

System Information

• GPU: RX 6800 XT
• Driver/LLVM version: Mesa 20.3.1-1
• Kernel version: 5.10.1-103-tkg-bmq
• Link to full system information report as Gist: https://gist.github.com/Patola/6caf42ff20f69f1bc95b527ef7714a31
• Proton version: 5.13-4

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 and Reproduction

1. Download the game
2. Press play
3. A black screen appears. Nothing else come out of it. Has to press "STOP" on Steam and even kill the still lingering wine processes.

Also tried with Proton-5.0-10 (doesn't even show the black screen), Proton-GE-21-ST-1 and even 5.0-10 with the forbidden mfplat stuff.

steam-1208520.log

Start with the attached steam-1208520.log and reproduce The Alchemist's House using Proton 5.13-4, then compare the reported behavior with Proton 5.0-10 and Proton-GE-21-ST-1. Done means the game starts without a black screen and Steam does not leave lingering Wine processes after stopping it.