Is Uber Duriel untargettable by minions?

I've killed

Duriel in the

Forgotten Sands a few dozen times, and every time my traps just sit there without firing and Ilzan wanders around confused while I kick

Duriel to Death. Was wondering if this was normal and was in LoD or not.

I have noticed that as well with my traps, the don't shoot

Duriel. yeah it seems like the minions wont shoot him, can anyone confirm if any other summons do not engage him (like skeletons).

Typically my merc attacks Uber Duriel, however I have had him ignore

Duriel, wander off and pull an elite pack. Super helpful.

There seems to be some sort of (rather annoying) bug that prevents merc/minion activity for at least some time.

Minions can most definitely target and attack

Duriel. However, they also regularly find themselves in a loop of mindless wandering for quite a while before doing so. And just as a bonus, that mindless wandering does indeed sometimes just result in them running off and pulling random packs to you for no reason.

Glad that it's not just me. Thought it might have been a bug from running under emulation on Linux or something else wonky.