I threw an Instant Health potion at a Villager and it crashed.

What I expected to happen was...:
The Villager should recieve Instant Health.

What actually happened was...:
It crashed. (It's desciption was Ticking entity)

Steps to Reproduce:
1.LAN your world.
2.Spawn a Villager and put Glass Panes around it so it couldn't go away.
3. Execute Command:

/entitydata @e[type=Villager,c=1] {Offers:{Recipes:[0:{maxUses:999999,sell:{id:"minecraft:potion",Damage:16421s,Count:99b},buy:{id:"minecraft:prismarine_crystals",Damage:0s,Count:1b}}]}}

4. Trade with it to recieve the potions from it. (Do not unstack them)
5.Throw a potion at the Villager.
6.Crashed.

The Crash Report is attached.
The Instant Health particles showed when I relog and everything remains fine.