Minecraft wiki entry for Development_versions, associated text: MC-100946 – Bow with mending undraws when receiving XP while drawn.
MC-113968 – Zombies of village siege spawn despite gamerule doMobSpawning being false.
MC-113970 – Zombies of village siege do not spawn centered on a block.
MC-134964 – Unexpected error: java.util.NoSuchElementException.
MC-142037 – java.lang.NullPointerException: Initializing game.