Minecraft wiki entry for Development_versions, associated text: MC-666 – Spawn Protection not working properly.
MC-1324 – /difficulty command doesn't produce any messages.
MC-1775 – Hash size breaks redstone.
MC-2987 – Can't sprint going up stairs.
MC-4232 – SpawnPotentials list working incorrectly.
MC-8437 – URL parser does not detect 4 letter TLDs.
MC-8487 – Wither doesn't generate health when in minecart.
MC-8510 – Gamerule doMobLoot doesn't affect xp drops.