Not sure exactly when, but since last patch (also upgraded from Rk2 to Rk3 at same time) during raids I am being flooded with tells asking for the group buff ENC lvl89 Manastorm, as it no longer being utilized with either "Mass Group Buff" or "Tranquil Blessings"
Manastorm should not be MGBable. According to EQ Resource spell data, none of the versions are or have been at any point. There were no changes to the spells in the last patch. Raidloot also lists the spell as non-MGBable. I'm assuming you are on a TLP...maybe there was something borked specifically there and was fixed? The spell has never been MGBable on live.