Is this intended? When ever you go and find a new generated pillager outpost, the pillager's that were spawned in the outpost first never despawn if I move further away, but Once you killed them and wait for more pillager's to spawn, they can despawn if you move away far enough.

Reproduce:

1. create new world
2. Locate for a new pillager outpost
3. wait for the pillager's to come outside the outpost and watch them path find their way back the the first floor.