That's a trend I begun to notice in daily HC and tonight even in Court of the Star.
Self healing tanks (mostly DH, sometimes DK) would pull entire room of trash and just AOE destoy them while sustaining any damages.
They mostly keep aggro on everything but they can barely kick any spell nor prevent secondary target damage.
As holy or Disc, I struggle to keep the rest of the group alive.
The experience isn't really pleasant but as long as we don't wipe, the donjon is done quickly.
Only happens in PuG obviously, so far, my premade tanks have been considerate.
Am I the only one to see this kind of behavior ?