Okay, we'll consider it's a hidden gap (it actually is) so JellyHailey just can't see it.
Regina? You mean Ivory?
I don't remember doing anything specific. I just got to the east part of the ruins to test updated pathfinding. Maybe, I was creating JellyHailey from the crawling position since that way Hailey loses her clothes from the first hit. Also, sometimes I crawl right towards charging Jellyfish or in the opposite direction from it cause that way occasionally it can grab Hailey immediately without maneuvering to her after hit. This bug occurs not from the beginning but somewhere in the middle of the animation. It happened to me more than once (around 4 times) with different Jellyfish in a different tries