I just opened a bug report on this same problem, 1781060. It's shown as a duplicate of this one however this bug, 1756079 has been in a status of 'New' and 'Unassigned' since I opened it 2018-03-15
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1756079 Title: gnome-shell crashed with SIGABRT: "assertion failed: (hlist->tail_before == handler)" in handler_unref_R() from handler_match_free1_R() from signal_handlers_foreach_matched_R() from g_signal_handlers_disconnect_matched() from meta_background_actor_set_background() To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1756079/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs