Minecraft wiki entry for Development_versions, associated text: MC-163234 – Flying near the top of honey blocks or soul sand in Creative slows down flight speed.
MC-163411 – All entities but players and items do not produce particles when sliding down honey blocks.
MC-163665 – Cooldown overlay is solid white.
MC-163776 – Items thrown at the side of a honey block will keep their horizontal trajectory despite slower speed.
MC-163942 – Name tag in mini horse inventory model does not billboard properly.
MC-164163 – Glowing mobs stop glowing when invisible.
MC-164305 – Elder guardian particle is no longer transparent.
MC-164368 – Traveling back from the Nether creates a new portal in a random location.
MC-164706 – The Nausea effect makes the breaking animation render incorrectly.
MC-165242 – Hand animation is shown when trying to use a fire charge in water.
MC-165515 – Smooth lighting does not work for beds and double chests.
MC-165547 – Lighting of player and entities changes with the nausea effect.
MC-165586 – Creeper and lit TNT flashing is different than before.
MC-165750 – Falling sand drop with half in the air because of the ID box.