Minecraft wiki entry for Development_versions, associated text: MC-44579 – Cannot summon green-robed villager, even though its zombie counterpart works.
MC-87739 – /setblock with signs missing Text tags kicks all players loading the sign.
MC-89848 – /playsound/sound engine pitch algorithm isn't working properly.
MC-98779 – Skeletons spawned with /summon or natural spawning algorithm are not in the correct height.