Bugged abyss? video

Hello everyone, iam kinda new to poe, not sure it is like 100% bug, but really looks like, didnt see that before. Monsters just never stop coming, getting exp all the time, stayed there like for 10 minutes, then got back to hideout and back again to see and it was still bugged there, but why i try to explain it with words - just watch, added video at youtube, here is the link

https://youtu.be/HdvTKmuFyLQ

cheers