I am not sure if anyone else has reported this but I was on my offline standard Acolyte fighting the Emperor’s remains prior to going to the Imperial Age and I activated my Lich form and was immediately pulled back out from damage only to find out that I was incapable of dying and this continued regardless of going back into Lich form or using Health pots or even “Drain Life” until I relogged and now I am able to die again.