Furnaces don't get placed correctly when a village is generated on server.

When a new village is generated on my server, the furnaces in the village get defaulted to "minecraft:furnace[facing=north]".

Exact server output upon village generation:

[07:26:12] [Server thread/ERROR]: Can't setBlockAndData(minecraft:furnace, 0) as it's an invalid block state. Defaulting to minecraft:furnace[facing=north] instead (data 2)
java.lang.IllegalArgumentException: Cannot set property ayl{name=facing, clazz=class dt, values=[north, south, west, east]} to down on block minecraft:furnace, it is not an allowed value
	at aya.a(SourceFile:131) ~[minecraft_server.jar:?]
	at aqt.a(SourceFile:236) ~[minecraft_server.jar:?]
	at ayv.a(SourceFile:618) [minecraft_server.jar:?]
	at alu.d(SourceFile:287) [minecraft_server.jar:?]
	at bfw.a(SourceFile:442) [minecraft_server.jar:?]
	at bgr.a(SourceFile:380) [minecraft_server.jar:?]
	at bgn.a(SourceFile:1581) [minecraft_server.jar:?]
	at bfz.a(SourceFile:36) [minecraft_server.jar:?]
	at bfq.a(SourceFile:88) [minecraft_server.jar:?]
	at bad.a(SourceFile:443) [minecraft_server.jar:?]
	at ot.a(SourceFile:175) [minecraft_server.jar:?]
	at ayv.a(SourceFile:997) [minecraft_server.jar:?]
	at ot.c(SourceFile:104) [minecraft_server.jar:?]
	at ot.d(SourceFile:117) [minecraft_server.jar:?]
	at alu.b(SourceFile:273) [minecraft_server.jar:?]
	at ou.h(SourceFile:288) [minecraft_server.jar:?]
	at ou.c(SourceFile:179) [minecraft_server.jar:?]
	at net.minecraft.server.MinecraftServer.w(SourceFile:570) [minecraft_server.jar:?]
	at nt.w(SourceFile:284) [minecraft_server.jar:?]
	at net.minecraft.server.MinecraftServer.v(SourceFile:506) [minecraft_server.jar:?]
	at net.minecraft.server.MinecraftServer.run(SourceFile:422) [minecraft_server.jar:?]
	at java.lang.Thread.run(Thread.java:744) [?:1.7.0_55]

This might also be related: http://youtu.be/HXTTwRyad3I

What I expected to happen was...:
Furnaces in a village face towards front on building.

What actually happened was...:
Upon generation, the furnaces reverted to facing north.

Steps to Reproduce:
1. Start a server on 14w25b
2. Find a village that contains furnaces.
3. Observe server log and the direction that the furnaces are facing in the village.