Two Rare enemies with the "undying will" modifier will make each other invulnerable

So you can't kill them anymore unless you somehow manage to seperate them. This problem has been fixed in poe1 back in the days, so i'd guess its just an oversight.

Not 100% sure if it was undying will modifier, as i don't know what i actually does. But they both had it and i guess it was that.

Confirming this behavior -- two elites stacking this mod make eachother unkillable.

Bug report: 490,038,654