Your system information

• Steam client version (build number or date): v0.20201203.1
• Distribution (e.g. Ubuntu): ubuntu 20.04 64-bit
• Opted into Steam client beta?: No
• Have you checked for system updates?: Yes

Please describe your issue in as much detail as possible:

Describe what you expected should happen and what did happen. Please link any large code pastes as a Github Gist

"Shadowrun: Hong Kong", "Shadowrun: Dragonfall", and "Shadowrun Returns" were all broken by the latest linux client update. The screen turns black as if the game were about to start, then returns to the desktop

Steps for reproducing this issue:

1. pick one of the Shadowrun games in the library
2. try to run it