As I understand it general-hooks are run for all packages, so unless the hook provided by unity-2d checks if unity-2d is actually running it will add the tag simply by being installed. Reaffecting.
** Package changed: apport (Ubuntu) => unity-2d (Ubuntu) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/712343 Title: ubuntu-bug showing that I am running unity-2D, when reporting from Compiz Unity interface -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs