Pre pull regen is wrong, I have also seen this more often in dungeons and I typically click it off. Yes the tank can control the mobs if it happens, but if someone regens before the pull be ready to get smacked. Mobs are often spaced too widely to just simply flash/op/unleash them. The tanks have to aggro One and let them converge onto the tank to pick up the rest of the group. If there are regens ticking the mobs will rush the heals instead. I hope the trend stops, but I can’t critique every heal that does it, often I get backlash for suggesting “please don’t regen me pre pull.”