Playing No Man's Sky (275850) prevents launching non-steam games/apps

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Your system information

• Steam client version: 1698260427
• SteamOS version: 3.4.11
• Opted into Steam client beta?: No
• Opted into SteamOS beta?: No
• Have you checked for updates in Settings > System?: Yes

Please describe your issue in as much detail as possible:

After playing No Man's Sky for a while (often a few hours at a stretch), I quit and do some other things and then decide to run a Flatpak app (Chrome in this case), which I've added as a non-Steam game. Chrome does not start.

After investigation, I find that the log file /run/user/1000/gamescope-session.log is 1.5GB in size and has filled the entire 1.5GB tmpfs. In my case, it contains 15,379,037 instances of this line:

src/clientdll/controller.cpp (12866) : Assertion Failed: AppID 275850 exceeding analog action limits

After deletion of this log file and restarting Steam, or after rebooting, I'm able to launch Chrome and other Flatpak apps again.

gamescope-session.log.gz

Steps for reproducing this issue:

1. Boot Steam Deck in game mode
2. Play No Man's Sky (275850) for a couple hours docked, quit and return to game mode
3. Try to launch Chrome

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To be clear, the reason Chrome is failing to run is because Flatpak is unable to create temporary files in /run/user/1000/, which is how I discovered the issue.

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Oops, didn't mean to close

[CrazyCritic89]

Hate when that happens

[bertogg]

This should be fixed in SteamOS 3.6 (currently in beta).