Minecraft wiki entry for Development_versions, associated text: MC-143757 – Roof of plains blacksmith is cut off.
MC-143793 – Composter sounds are swapped.
MC-143794 – Falling blocks break all snow layers, including when fully stacked.
MC-143893 – Falling blocks on piston head will drop as an item when the piston retracts.
MC-143905 – Empty or none existent pool: minecraft:streets when creating new world.