OK windowPreview.js isn't the only place it can happen. The logs in comments #2 and #3 show it happening in popupMenu.js too.
** Summary changed: - 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] + GNOME Shell crashes with signal 6 when right clicking on the dock [clutter_actor_dispose: assertion failed: (priv->parent == NULL)] ** Also affects: gnome-shell (Ubuntu) Importance: Undecided Status: New -- 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 with signal 6 when right clicking on the dock [clutter_actor_dispose: assertion failed: (priv->parent == NULL)] Status in gnome-shell package in Ubuntu: Confirmed Status in gnome-shell-extension-ubuntu-dock package in Ubuntu: In Progress 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/+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