Arron Blocksidge
Comments
No they are about 26 blocks away and like I said EVERY mob in the nether despawns in that area and new ones respawn around the player following normal mob spawning algorithms the instant a player enters the nether. The guy testing it with me hit a pigman then went back to the overworld (I remained in spectator mode). All the mobs remained in the nether in exactly the same position they were before he left. The moment he reentered the nether the pigman that was standing right by the portal despawned as did every other mob and new ones spawned. Then the pigmen were no longer agro.
I also encountered this bug on my guardian xp farm. I stayed in the nether in spectator mode whilst someone sent guardians through the portal in the overworld. I could see them going through, all good. But the instant he entered the nether through the nearby portal they despawned. Also all other mobs in the nether despawned and new ones spawned around him at that instant.
I don't think the bugs are related.