Mobs riding Shulker turn head 360°

Please do not mark unreleased versions as affected.
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confirmed for 15w44b

Confirmed for 15w47c

• Screenshot

Also affect most of the Mob.
Please change the title and description.

Affect the Mob types:

1. Skeleton

2. Zombie

3. Enderman

4. Witch

5. Pig

6. Cow

7. Rabbit

8. Wolf

9. Bat

10. Spider

11. Sheep

12. Cave Spider

13. Ocelot

14. Chicken

15. Creeper

16. Mooshroom

17. Zombie Pigman

18. SnowMan

19. Iron Golem

Confirmed for 15w51b

Confirmed for 16w03a

Reproduce:

/summon Shulker ~ ~ ~ {Passengers:[{id:"~"}]}

Confirmed for 16w06a

Relates to or duplicates MC-1207

related, as this is mobs riding a shulker, not a player riding a mob

edit: indeed duplicate, as it's about anything riding anything, the title should change