Yes, zenity is required. gnome-themes-standard is no longer a direct dependency of mutter. However, gtk3 includes the Adwaita theme but gtk3 is not a direct dependency of mutter either.
** Changed in: mutter (Ubuntu) Status: New => Invalid -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1283727 Title: Silly dependencies To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/mutter/+bug/1283727/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs