In Chapter 3 in the far west, there was a dungeon I had to reset to finish. I should defeat all monsters as first task.
When I entered there were monsters in front and behind a locked door.
I thought no problem, they will teleport to me when only a few are left. And when I was in the south of the dungeon it happened, the few left monsters teleported to me, all but one, as seen on the pic.
The US name of the dungeon is “Seaside Descent”.
https://i.imgur.com/piJMPhj.jpeg