The Steam Client Beta has been updated with the following changes:
Steam Achievement SetsA new way to organize, track, and complete a game's achievements. Read more details in the announcement.
Games can now organize and group achievements for base game and DLC content
DLC achievements can be added via sets without breaking game completion
Completed achievement sets remain completed when new sets are added
Achievements and sets can be archived if they are seasonal or can no longer be...
Did you try and app like Flatseal for customising Flatpak permissions?
Yeah that fixes some things, but there is a sudo command it tries to run that has some sort of pathing issue in the Flatpak version.
Sounds like a bug to be reported :(
Is it less up to date than other versions they have?
There is already a bug report. It’s been open for two years.
Valve doesn’t support SteamVR for Linux in Flatpak or Snap