I never could get the bongos pet bar working properly even with those fixes above. I would get the pet bar when I mind controlled a mob, but the buttons would be incorrect (i.e. i got the passive button when I should have had a shadowbolt...).
I read some posts here in and downloaded:
http://www.curse.com/downloads/details/9412/
It's just a pet bar and it works just fine within MazzleUI. Don't forget to disable the visibility of the bongos petbar if you're going to use this mod.