NPC Spawn Issue: Lich of Miragul

[Grizzl]

In the Caves in Everfrost the Lich is now aggro. is that intended?
Im a 50 Ench and grouped with a 50 Shaman and only got him
to 70 %. Immune to mez, stuns and highly resistant. Very high
aggro range. [You must be logged in to view images. Log in or Register.]
Quite a bit for that zone and area.
Unable to do anything in Caves due to his roaming.
i.e. quest the Glacier Bear