Ruin affix in Trial of Chaos

Was running a Trial of Chaos just now and picked the ruin affix (the shade that fails the trial if it hits you 7 times). I´m running a Deadeye and Rain of Arrows with pin as support gem and I was damaging the shade as well as pinning it. I imagine this is not intended.

EDIT: I just realized I´m not the sharpest tool in the shed and this is Path of Exile 1 forums, so if this doesn´t belong here for PoE2 bug reports then if some mod could delete it that´d be great.