Comment 20 for bug 967294

This looks really bad on dual monitors where there might be a maximized window on each monitor.

I'd suggest changing the heuristic of not drawing the shadow from "focused window" to "topmost window on the current monitor". This way it would still work as intended, but not look as distracting on the second monitor.

It could be kind of confusing to not being able to do anything with the global menu though since it's only available for the currently focused window. I think you should allow multiple global menus at the same time - one for each monitor, for the topmost window.