Flatpack broken after Upgrade to Fedora Workstation 42

After Upgrading Fedora Workstation from Version 41 to 42, I face a broken installation of Flatpak. Apps do not start.

It seems to be a problem with access rights. If I try to start e.g. Signal in a console, I get the following output:

$ flatpak run org.signal.Signal
bwrap: Can’t find source path /run/user/1000/doc/by-app/org.signal.Signal: Permission denied

Does anybody else face this issue? - It seems to apply to all Flatpak apps on my system.

Thank you for any hint or support in advance!

Best regards
Thomas

Sorry, I have found the solution myself, directly after posting this. The solution is mentioned in the following post: Random Flatpak run permission errors - #4 by salience.

After rebooting the flatpak permission problem is solved.

Sorry for bothering…

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