Latest game version won't start

[Hans-van-B]

Your system information

• Steam client version (build number or date): Latest
• Distribution (e.g. Ubuntu): Linux Debian 10
• Opted into Steam client beta?: [No]
• Have you checked for system updates?: [Yes] All dependencies met
• Steam Logs: [generate by running this command in a terminal tar -zcvf ~/Desktop/steam-logs.tar.gz ~/.steam/steam/logs]
• GPU: Nvidia with official closed source drivers

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

Both Second life and Portal 2 experience the same issue.
If I download the game and try to run it, it will show a flash screen and ten crash.
In /tmp/gameoverlaygui.log
Error: Detected possibly crashed/killed game, exiting

After in settings, running the previous version,
both games do run without issues

Steps for reproducing this issue:

1. Install latest version on Debian 10
2. Start the game