I experimented at found they only came back if they could see me. After
consulting
with a GM, I pretty much confirmed that it is a line of sight nerf. Feign
pulling a mob
around the corner should be possible, though I have not specifically tried it.

I am suprised it hasn't started already. I just wanted to share with you my Post
nerf FD experimentaion.

Sol A green Flame goblins. the goblins I was experimenting with were on the
floor near the passage to where the Foreman spawns. I succesfully feigned them
at this point. they returned to thier spawn points . I stood up they immediatly
came back. so I feign again they return to thier points I get up and run all
the way to the small bridge type thing near the sol b spawn point. I fd again.
I was several mins stand up wait a few and here they come a running at me. I fd
again let them walk away. get up and they come back.

A fellow monk on my server experimented in Lguk with some Dar Undead frogs and
had similar results even after 5 mins of feign time.