As far as I know, the gnome-system-tools are not affected as the whole nopasswdlogin thing was introduced precisely in this package. The bug is in the new gnome-control-center 3 users panel, which uses accountsservice.
** Changed in: gnome-system-tools (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/882255 Title: No administrative actions possible (password refused) after enabling passwordless login To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/accountsservice/+bug/882255/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs