Minecraft wiki entry for Development_versions, associated text: MC-33383 – Lag while taking screenshot with F2 in singleplayer.
MC-59517 – TNT explode=true blockstate drops TNT item when fused by hit in survival mode.
MC-84005 – Book and quill doesn't save changes when edited in offhand.
MC-88099 – Slimes/Magma cube with NoAI-Tag still can damage the player.
MC-88356 – Bow animation broken in off-hand in third person.
MC-119971 – Various duplications, deletions, and data corruption at chunk boundaries, caused by loading outdated chunks — includes duping and deletion of entities/mobs, items in hoppers, and blocks moved by pistons, among other problems.
MC-124942 – "Invalid book tag" is not translatable.