Comment 6 for bug 783240

If the problem is inconsistency, some applications have no menu altogether but we can only find out about that after we hover the mouse on the panel. At least in this case, the presence/absence of the menu is not visual clutter, it's an important information. Besides, one of the objectives of the global menu is to save vertical space, but this makes no sense when the window is not maximized.

I love global menu, but I've seen many people confused by it. An option to control the behaviour of the global menu should be added to CompizConfig.