Java Edition 14w04b

14w04b was released to fix some of the bugs and crashes of the 14w04a snapshot.

From the 1.8 Snapshots

 * – setblock on a tile entity with "replace" doesn't seem to work

From the Previous Snapshot

 * – Skin layers appear to be off when travelling through portals
 * – Minecraft 14w03b - No Anvildamage to Players in any gamemode
 * – Cloned command block crashes
 * – Framerate lag/drop in the latest snapshot when moving (Game performs mass chunk updates)
 * – Killing a mob always gives you a rare loot (100% chance).
 * – Server disconnects player when player takes damage from mob
 * – Furnaces stop operating between launches
 * – Grass under snow doesn't have the snowy texture
 * – Item frames duplicate on (re)loading
 * – Item frames do not give off a signal if placed on snow
 * – Monster dungeons not spawning
 * – Clock not showing in item frame
 * – Item frames can't be placed and already placed drop down