I bisected mutter and gnome-shell until I identified the revision in mutter that caused the regression: https://gitlab.gnome.org/GNOME/mutter/-/commit/26676a829e74859488154cd8c45de1d0b629f3ca.
More specifically, the changes to src/core/events.c. Indeed I rebuilt mutter in jammy with the following patch, and the issue with the firefox snap was gone: --- a/src/core/events.c +++ b/src/core/events.c @@ -523,10 +523,6 @@ meta_display_handle_event (MetaDisplay #ifdef HAVE_WAYLAND if (wayland_compositor && !bypass_wayland) { - if (window && event->type == CLUTTER_MOTION && - event->any.time != CLUTTER_CURRENT_TIME) - meta_window_check_alive_on_event (window, event->any.time); - if (meta_wayland_compositor_handle_event (wayland_compositor, event)) bypass_clutter = TRUE; } -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1964541 Title: Cannot rearrange Firefox (snap) browser tabs/bookmarks in gnome-shell 42 (Wayland session) To manage notifications about this bug go to: https://bugs.launchpad.net/firefox/+bug/1964541/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs