All windows that i maximize, after demaximisation has the same problem with title bar.
Titlebar are visible but cant be clicked, if i click in that place i click next layer elements (desktop icons, backgrount windows).
I have to use ALT key to move windows back maximize (moving top), and than i can use buttons on the title bar.
That problem started on ubuntu 12.10 with compiz 9.9.2, and now i see its in last beta of ubuntu 13.04
Does anyone knows what is solution to my problem ?