I was trying to do that thing we've all done where you agro the endermen and then hide under something that's too short for them and whack away to collect the pearls....but none of them followed me. This is in the nether, by the way. I thought maybe it had something to do with standing under one of those fungus trees. So I moved away. I looked at a whole gang of endermen, ticked them off, and then nothing happened. Not one came after me. So I went back to base. There was an enderman hanging out there. Attacked him, he teleported, and then came back and only tried attacking me once.
I've also noticed a higher than normal incidence of enderman griefing. Anyone else?? Or is it just me?