Minecraft wiki entry for Development_versions, associated text: MC-3591 – Cured zombie villagers do not drop picked up items.
MC-24336 – Withers are harmed by the explosions of their wither skulls.
MC-58177 – Night vision rendered darker and orange when nearing light sources with brightness on moody.
MC-94013 – End stone bricks are less durable than end stone and destroyed by the ender dragon.
MC-117635 – Rear legs of sitting tamed wolf are displayed hovering.
MC-133877 – Extreme lag from decaying leaves.
MC-149181 – Biome blend causes massive stuttering when loading chunks or when placing/breaking blocks.
MC-149343 – Chunk block lag when a tall spruce tree is grown in that chunk.
MC-152159 – Players can hit the dragon during its death animation.
MC-152683 – Spectral arrow does not count for "Take Aim" achievement.
MC-153334 – Cured villagers sell bookshelves for 1 emerald and buy books for 1 emerald, allowing players to easily get an unlimited amount of emeralds.
MC-153697 – Iron golems will occasionally attack players in creative/spectator mode.
MC-155289 – Mob spawning rate in the Overworld is reduced.
MC-155758 – Endermen do not pick up non-collidable blocks.
MC-159496 – Player death uses incorrect sound event.
MC-160177 – Block breaking animation does not show for other players.
MC-161002 – Endermen do not turn to face the player when looked at.
MC-162905 – Kelp naturally generates with age too low.
MC-164397 – Birches no longer generate in dark forest biome.