The bug
Endermen move extremely fast, whether passive or angry. When aggravated they can outrun a player sprinting (without speed potions).
This used to also affect spiders and zombified piglins to some extent, but was since fixed for those mobs.
The following videos highlight the differences between fighting an enderman in 1.7.10 and 1.12. The 1.12 enderman teleports less and runs much faster than its 1.7 counterpart.
1.7.10: https://youtu.be/DqB1otCPjA0
1.12.2: https://youtu.be/p71AO5O9V8c
Comments 33
Maybe this video helps as proof: http://www.youtube.com/watch?v=SjUzLEFbyBg
I reported a similar issue with ghasts in MC-48368, but with ghasts being aerial mobs and all I wasn't able to tell for sure if it was the same problem.
Can confirm with spiders. See MC-47933
Can confirm