I managed to get the same crash by right clicking on the dock and not trying to close anything:
gnome-shell[3416]: Clutter:ERROR:../clutter/clutter/clutter-actor.c:5476:clutter_actor_dispose: assertion failed: (priv->parent == NULL) gnome-shell[3416]: Bail out! Clutter:ERROR:../clutter/clutter/clutter-actor.c:5476:clutter_actor_dispose: assertion failed: (priv->parent == NULL) gnome-shell[3416]: GNOME Shell crashed with signal 6 gnome-shell[3416]: == Stack trace for context 0x624b33d172d0 == gnome-shell[3416]: #0 624b33dde700 i resource:///org/gnome/shell/ui/popupMenu.js:802 (5815adf2970 @ 104) gnome-shell[3416]: #1 7ffe00bd6a10 b resource:///org/gnome/shell/ui/popupMenu.js:815 (5815adf2a10 @ 32) gnome-shell[3416]: #2 624b33dde680 i resource:///org/gnome/shell/ui/popupMenu.js:1208 (5815adf3470 @ 17) gnome-shell[3416]: #3 624b33dde5e0 i resource:///org/gnome/shell/ui/popupMenu.js:802 (5815adf2970 @ 104) gnome-shell[3416]: #4 624b33dde4e8 i file:///usr/share/gnome-shell/extensions/ubuntu-d...@ubuntu.com/appIcons.js:1043 (2c158bae5c40 @ 33) gnome-shell[3416]: #5 624b33dde458 i file:///usr/share/gnome-shell/extensions/ubuntu-d...@ubuntu.com/appIcons.js:1038 (2c158bae5bf0 @ 17) gnome-shell[3416]: #6 624b33dde3a8 i file:///usr/share/gnome-shell/extensions/ubuntu-d...@ubuntu.com/appIcons.js:458 (2c158bae0e20 @ 346) gnome-shell[3416]: #7 624b33dde308 i resource:///org/gnome/shell/ui/appDisplay.js:3100 (d5d8a6931f0 @ 127) gnome-shell[3416]: #8 624b33dde278 i resource:///org/gnome/shell/ui/init.js:21 (5815ad70bf0 @ 48) -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to gnome-shell-extension-ubuntu-dock in Ubuntu. https://bugs.launchpad.net/bugs/2056506 Title: GNOME Shell crashes when I close any application by right click in the dock [clutter_actor_dispose: assertion failed: (priv->parent == NULL) from ubuntu-d...@ubuntu.com/windowPreview.js:642] Status in gnome-shell-extension-ubuntu-dock package in Ubuntu: Confirmed Bug description: I'm using Noble for sometime and I'm having a very annoying and odd problem: everytime I close an application on x11 (Wayland doesn't work any better) clicking with the right button in the dock and choosing "Quit" I got that screen saying that something went wrong and I need to close the session and start over. Please, let me know what logs do you need. I couldn't find any meaningful information by myself. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell-extension-ubuntu-dock/+bug/2056506/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp