That is because GParted is running as root and as such has no access to the service that shows menus outside the application. The same happens when you run other GUI applications as root or as another user than the desktop user (e.g. Synaptic).
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1594047 Title: menus do not appear in the menu bar To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gparted/+bug/1594047/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs