I had this happen after enabling the Expo plugin. I'm not sure if it happened when I enabled it or after I used it, but it's doing just what you described. The icons on the left still work fine.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/769281 Title: Unity's top bar turns completely black after enabling Compiz plugins -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
