https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1424 is definitely the culprit here. Snaps depend on access to the abstract namespace socket to function correctly.
Inside the sandboxes, snaps see a private /tmp that is under their complete control. So there is no /tmp/.X11-unix directory there. They can see the abstract namespace socket though, which the client libraries will use automatically.
https:/ /gitlab. gnome.org/ GNOME/mutter/ -/merge_ requests/ 1424 is definitely the culprit here. Snaps depend on access to the abstract namespace socket to function correctly.
Inside the sandboxes, snaps see a private /tmp that is under their complete control. So there is no /tmp/.X11-unix directory there. They can see the abstract namespace socket though, which the client libraries will use automatically.