The Unique Wandering Spirit is possibly bugged

Just had an encounter in a T8 map with one of those unique spirits that gives the Hare buff, then gives other spirit blessings at random. I don't know if it was a bug, but somehow, the rare mob I was fighting suddenly had a huge set of the spirit blessings. Multiple copies of the same blessing, like it had 5 or 6 different instances of the same buff applied simultaneously. And it became basically entirely unkillable, it hit me for 50% of my life on basic attack, attacked insanely fast, and every hit would slow me by 50% at least, until it finally froze me and killed me. So I guess, I hope that this was a bug and will be rectified immediately, because a creature like that shouldn't exist in a game like this. With the desired vision and direction of a slower, more tactical approach, there was absolutely NOTHING I could have done differently against that thing except run and pray the damn thing got stuck. I genuinely hope that was a bug that will be fixed, otherwise I will be avoiding engaging with the spirit mechanic altogether. Wouldn't want to upset the believers of "The Vision"

I'd post a pic or video of the thing in question so it could be seen, but it was so unexpected that I had no way of capturing the event.