Confirming in new install of 16.04 today. Doug McMahon is correct when he said... "This seems to be continuing at 'random' with no particular rhyme or reason & no way to reproduce on demand." After installing Pinta and The Gimp, I had no global menu for either app. Logged out and back in and all was fine. Rebooted and lost it again. Logged out and back in and the menus were fine. Very odd bug.
Confirming in new install of 16.04 today. Doug McMahon is correct when he said... "This seems to be continuing at 'random' with no particular rhyme or reason & no way to reproduce on demand." After installing Pinta and The Gimp, I had no global menu for either app. Logged out and back in and all was fine. Rebooted and lost it again. Logged out and back in and the menus were fine. Very odd bug.