Took a decent break since doing bosses at LoML, went back to do Gumiho and I come across the jump attack where two spawn in the air and the one without the necklace is the safe zone. Died, thought oh I guess I don't remember, looks like the one with the necklace is safe, died again.... hmmm guess I'll look at a video, says the no necklace is the safe area, I go back in and still die every single time i've stood under the no necklace clone. 

https://youtu.be/VDo5JeK9npE

Video showing Bug