I'm not convinced that this is a GNOME bug. First of all, it doesn't appear in other distributions (at least not in Fedora). Second, given the fairly radical changes that Ubuntu has made to the user interface in recent versions (e.g. Unity), I wouldn't be surprised if loss of Accessibility functionality was a side-effect. Maybe someone could take a look at it?
I'm not convinced that this is a GNOME bug. First of all, it doesn't appear in other distributions (at least not in Fedora). Second, given the fairly radical changes that Ubuntu has made to the user interface in recent versions (e.g. Unity), I wouldn't be surprised if loss of Accessibility functionality was a side-effect. Maybe someone could take a look at it?