Ben Slimane Khaled Skander

It also affect Rail booster,

I don't know if it's the same bug,
but sometimes when re-entering game, the mob stay stuck floating in sit-position in mid-air without minecart to support him

comfirmed in snapshot 13w05b

confirmed in snapshot 13w05b

Confirmed in snapshot 13w05a

The same bug in snapshot 13w04a

What's supposed to happen :
1-enter the nether portal
2-wait the animation
3-teleport to the nether
4-play bare-handed tennis with ghasts

What's happening :
1-enter the nether portal
2-instant teleportation to the nether wihtout the animation
3-after your arrival, the animation start and don't stop as long as you stay in the portal
4-be pretty confused

I think the cause is within the mobs-teleportation-to-the-nether-feature

Comfirmed in snapshot 13w04a,
also in the case of spider jokey, the arms of the armor go faceward and backward like the steve walking animation.

I comfirm, i "jailed" few zombie with tracks, when a put a villager, one crossed the tracks to attack the villager while the other just looked at the villager. I ahad also a group of pigs cross tracks with no hesitation.

Can you imagine how an arrow shake when hitting the target in real life ? it's the same but it doesn't stop.

it's the same for a lot of blocks.

lava flowing farther and faster in the nether could be an interesting feature, let's think about it.