[Becomes immune to damage] All Rare monster in Abyssal Depth

Still having this problem +1

Happening nearly every time to me in Abyssal Depths. Please fix GGG!

Also having this issue most of the time in Depths. Had one today that had life regen as a mod and it was almost impossible to kill it because we'd get it half dead, it would go completely invuln for no reason, and then it'd have all it's health back before we could damage it again. Only way to get around it was to start running away as soon as it as invuln and make it tunnel to us so that it took it out of whatever animation is making them undamageable. It had soul eater, so no fog. It's always the snake dudes and it's always when they start spinning in a figure 8 or w/e with their tail.