Comment 9 for bug 1309973

I had a similar problem, with all libre office menus not being visible when "show menus" was set for "in the windows title bar" on an upgrade from Precise to Trusty.

Strangely, the behavior was correct on another machine which had a completely fresh install of Trusty.

Comparison via synaptic pointed towards the Libreoffice Meta package, which was installed on the upgraded machine, but not on the new install.

I removed this package via Synaptic, and found the window menu behavior became correct on the upgraded version. Menus are now shown in the windows title bar.