Minecraft wiki entry for Development_versions, associated text: MC-105292 – falling_block lighting inconsistency with Smooth Lighting on.
MC-111493 – Fireworks do not cause knockback to either the player or mobs.
MC-166358 – Inconsistency with sounds of dispensers using shears.
MC-172517 – Walls don't behave normally when next to soul sand.
MC-178029 – Chunks get scrambled by logging in twice on solo world.