Feeling good, huh? Now EAT THIS: [1.1.5.0] Sister Crimson 2:14 (my record).
Yes, iirc, something about “not being mono-damaging.”
Honestly, I think devs had a choice to make: give up on the whole MI on enemies idea or let this happen. Both MI-ed enemies and occasional invulnerability increase randomness so to some ppl both are actually good.
I think I posted feedback with an idea to remove certain affixes from the pool of those that can spawn on enemies (namely those 75% res magic prefixes) or maybe even remove them completely from the top lvl items (also for better MI farming as nobody wants 83% cold res on endgame gear when it could’ve been a valuable prefix).
But all arguments against randomness seems to fall on deaf ears.