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.
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I have seen the exact same thing happening on my 14w25b server when generating a new world.
Seed: 686298914 generates a village near spawn, so gives the error repeatable at every first run between 23% and 35%. (First run meaning, delete world and start again).
Platform: Win 7 - 64bit, with java 1.7.0_60, 64 bit

No longer an issue in 14w29b