The Steam Deck Beta Channel got a minor update to fix the following issues:
Fixed the issue where selecting a group chat showed an endless loading throbber until another chat was selected
Fixed a regression in the beta client causing notification toasts to not show while playing a game.
Fixed 'Delete Proton Files' not cleaning files that contain ":" in the path
In Desktop mode, a case where the per-app Steam Play compatibility tool override dropdown would not appear was fixed
You can follow the Steam Deck beta news here