You're the best Dinnerbone! <3
1.7.1 does not fix this issue. I think it has been fixed as far as villagers and zombies, but hostile mobs and players, it is still as laggy as ever. I am still getting the effect I showed in this video: http://youtu.be/9RZxKt-yMgU
I made a video in vanilla 13w39b showing off the bug having a big impact on my map:
http://youtu.be/9RZxKt-yMgU
@Eris It is still present. Your situation might be different, but I definitely am getting huge amounts of block lag and mob lag when theree are a bunch of zombies trying to get to me in an unreachable place.
I tested a little minigame on my server with 4 people and it was pretty much unplayable because of this bug
I have been having this happen to me too, its pretty game-breaking for map makers and such.
Heres a video of it: http://youtu.be/O04rqD2nYTk
This is still happening when the zombies are tracking a player (me) in 13w39b
I've have had this problem too, hopefully it gets fixed
Even when modifying the attributes of a normal spider (not with a summon command), they will not follow you after 16 blocks. I think something is messed up here.
Added World Download
I was also getting this funny one 😃
http://imgur.com/JCE98G0