I think it's a bug because when I'm in the end, they just start to attack me although I haven't triggered them. I knew this bug existed since April so maybe it's older ?

Reproduction steps :

1) Go to the end without interacting with any endermen

2) For some reason, they will teleports at you and start attacking

(Sometimes you can hear the taking damages before teleporting and attacking you maybe that's the cause?)

I don't know if it helps but I turned on the "Bundle" and "Villager Trade rebalance" data packs + I first encountered this "bug" on my server. I recorded the footage on my solo world BUT the LAN option was active.

Note: In the video, I just went in the end and looked up and then the enderman attacked me (I haven't done anything to him).