Minecraft wiki entry for Development_versions, associated text: MC-153766 – Rabbits no longer need sand/grass in order to spawn in deserts/tundras.
MC-153892 – Mending slows down breaking blocks.
MC-154019 – Beacon deactivate sound not sounds when you break the base.
MC-154031 – Villagers give away all food if they want to share it.
MC-154068 – Parrots occasionally disappearing when you take them from a boat.
MC-154201 – Trying to trade with villager immediately closes trading menu for some villagers.
MC-154362 – Crossbow has to reload when mending takes place.
MC-154509 – Bashkir letters Ҙ, ҙ, Ҡ, ҡ, Ҫ, and ҫ are not included in the Minecraft font.
MC-155092 – Zombie sieges can happen on mushroom islands.
MC-155104 – When closing a menu while moving the mouse, the screen will move in that direction.
MC-155172 – Hostile wolf AI has been broken: wolves can no longer attack enemies efficiently.
MC-155238 – Villagers picking up workstation through wall.
MC-155345 – ConcurrentModificationException when a player leaves an active raid.
MC-155571 – Silverfish and endermite spawners no longer functioning.