One of the patches Oct 30 - Nov 2 broke clerics' ability to use Tranquil Blessings AA or Mass Group Buff AA with Celestial Regeneration AA. TB and MGB work fine with other things, but not with CR now. This happens for every cleric I have asked, in both dynamic zones and PoK. There are no new AA ranks for these since TBM expansion, so no reason at all that this should be broken unless some other change in the code affected CR's ability to be massed. This makes a HUGE difference to raid healing, especially dealing with AoE damage.