Comment 4 for bug 1301776

Hey Marco, could you have a look.

We discussed that before and you said it was probably a compiz/unity issue (see http://irclogs.ubuntu.com/2014/03/11/%23ubuntu-desktop.html#t18:52)

"so, I guess it's something like that it doesn't notify us properly when it changes its alowed actions, or, we don't update when it asks (afaik I ignored some changes that were duplicated)"