In a nutshell, voidlord seems to have some sort of dot on him doing about 8k a sec. Tried dismissing him/exiting game/summoning other pets/switching to sacrifice all with no joy. Every time I resummon him there's still damage I can see ticking off him. Only happens on voidlord, not any other minions including normal voidwalker.
Other than submitting a ticket that could take days, anyone got any ideas please?