Not all the time but intermittently Unity will drop the menu from the HUD. Most often this is with GIMP but it has happened to other programs too. The menu choices are there but the content of the ...
Under GTK 2.10.0 one could allow HUD for Eclipse by replacing Eclipse with Xclipse in: /usr/lib/gtk-2.0/2.10.0/menuproxies/libappmenu.so After doing an update, this file dissapeared from the GTK ...
I have noticed that some menu items always show up in the HUD regardless of which application is focused (e.g. Messages > Chat), but others only show up when the application is focused (e.g. Chat > ...