Minecraft wiki entry for Development_versions, associated text: MC-146777 – Players cannot unselect resource packs.
MC-146778 – World completely stops loading/generating.
MC-146783 – Ticking entity crash (villager).
MC-146790 – Mob spawners no longer spawn mobs in air blocks.
MC-146795 – Crash when creating buffet world.
MC-146984 – Missing stonecutter recipe: stone bricks to chiseled stone bricks.