Minecraft wiki entry for Development_versions, associated text: MC-159357 – Bee breeding does not count toward "Two by Two" (minecraft:husbandry/bred_all_animals) advancement progress.
MC-159429 – Switching to a different item while consuming a honey bottle will change it into an empty glass bottle.
MC-159446 – Bees get pollen from lower half of sunflower.
MC-159456 – Bees are floating one pixel above the ground when sitting on the ground.
MC-159472 – Trees spawned from saplings can have bee nests.
MC-159476 – Bee model is not centered properly inside of the hitbox.
MC-159733 – Craftable bee hives are not flammable.
MC-159825 – Honey bottle not included in A Balanced Diet advancement.