GBA seems to no longer overwrite BA, if all AA's are bought. I'm guessing because the % chance to resist spells on BA at max ranks is now higher than GBA. Granted, you still don't want to use them together generally, but you won't accidently kill your or another beast's burn. If GBA is upgraded (hahaha) then it could become a concern again.
They did fix it? I remember in HoF it was still having issues. Was funny to target other beastlords in your raid and cast GBA on them for lawlz.
Hah, mean. I thought the newest BA rank was in CoTF but was wrong, so not really sure why/how it's fixed now. [Thu Dec 05 19:44:05 2013] You begin casting Bestial Alignment. [Thu Dec 05 19:44:05 2013] A wild spirit fills your body. [Thu Dec 05 19:44:07 2013] You begin casting Group Bestial Alignment. [Thu Dec 05 19:44:07 2013] Vengeance is filled with a wild spirit. (pet) [Thu Dec 05 19:44:07 2013] Your spell did not take hold.
I looked at the data and you're right. The RoF ranks of BA have a higher spell resist mod than GBA. The problem would still be there for anyone who hasn't spent the AA to get the last ranks of BA.