I'm using 12.10 with Gnome-Classic for stability-responsiveness purposes (Unity isn't great on my old Dell Inspiron 1525 Laptop). I installed and added the Indicator-Applet Application Menu - and most application do accept it nicely - besides libreoffice.
images added to indicate my point. The menu IS THERE - yet the entries aren't shown. I can click on the edge of the indicators, and use it somehow, however - it isn't usable at all.
thanks in advance.