Ever since I installed Fedora (27) MATE, the Logout or Shutdown options from the menu (System -> Logout or Shutdown) needs to be attempted twice to work.
The first time, nothing happens. No errors, no messages, just nothing. Doing it a second time works without problems.
This is always the case on a freshly booted system (within a few minutes of booting). After a long time of being up, sometimes Logout/Shutdown works on the first try, but not always.
On the other hand
shutdown -r now always works.
It’s a minor nuisance, but still annoying. What could be the problem with the Logout/Shutdown menu?