As stated on the upstream bug report, this is a 'normal' behaviour. 'Revert' will use the system default, and since we don't ship any in xubuntu (because it depends on the screen resolution), the key disappears (but it'll re-appear when you start xfce4-settings again).
** Changed in: xfce4-settings (Ubuntu) Status: Triaged => Won't Fix -- Reverting settings in xfce4-settings makes value disappear in the gui https://bugs.launchpad.net/bugs/330095 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs