Black artifacts on Steam Deck in desktop mode

[brazier]

Your system information

• System information from steam (Steam -> Help -> System Information) in a gist: Steam Info Steam Runtime Diagnostic
• 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 pastes as a Github Gist.

After an update earlier today there are now flickering black artifacts, happened after CS2 and Steam Runtime Library 3.0 got updated, unsure which is the culprit. No other changes have been made. Running it natively, switching to proton or running in game mode does not change anything.

This is docked with external monitor in desktop mode, also tried in game mode undocked.

[kisak-valve]

Hello @brazier, this issue is already being tracked at #3657. Closing as a duplicate.