When I provoke an enderman, whether I look at them or hit them, a majority of the time the enderman teleports away and never comes back. On normal occasions, an enderman will teleport around then come in to attack you, but when the issue happens, the enderman teleports away and then is completely gone. This happens in both the overworld and the nether, I'm yet to check the end. I don't remember this happening until this version.