I have resolved this problem and it is not a part of compiz/gnome, window decorations etc... The problem was in the Ambiance Revolution theme, which has explicitly set title_vertical_pad to 0. Since it is as issue with the Ambiance Revolution theme which is not an official theme in Ubuntu i guess this bug may be closed.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/814554 Title: Titlebar disappears on maximized windows under gnome To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/compiz/+bug/814554/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs