Commenting out StartupWMClass=opera did the trick for me. Had to remove the old launcher, but now it works like it should again :)
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/754019 Title: A running instance of Opera produces the Opera Widget Manager icon in the launcher -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
