Minecraft wiki entry for Development_versions, associated text: MC-2958 – Custom mobs and normal vexes drop equipped items with looting despite DropChances being set to 0.
MC-13884 – Hanging snow golems don't throw snowballs
MC-42248 – Placing lily pads does not have a hand animation in third-person.
MC-60634 – Spawn egg use animation not shown when using on animal.
MC-93827 – Clicking with meat on wolf / fish on ocelot to breed also causes it to sit / stand up.
MC-93841 – Right clicking on a tamed wolf, ocelot or parrot causes it to sit / stand up and uses item.
MC-110907 – Curse of vanishing does not work in some places.
MC-114715 – Mobs picking up items can drop their current item even when the drop chance is set 0.
MC-123307 – /execute store can modify player data inside item "tags" of their Inventory or EnderItems.
MC-123686 – Old chests disappear when updating to 1.8+.
MC-125880 – Recipe book rejects bows with Damage:0 tag when crafting dispensers.
MC-127094 – Arm animation is not executed in certain circumstances.
MC-135098 – Animal spawn eggs occasionally spawn baby animals.
MC-136352 – Tools from creative inventory/crafting do not have Damage:0 set until relog.
MC-136470 – Buckets' CanPlaceOn NBT check is applied to the block behind.
MC-145179 – /data modify modifies player item data but shows error message.
MC-152751 – Horse armor can occasionally be duplicated when killing a horse wearing it with a weapon enchanted with Looting III.
MC-153661 – Villagers always ring bells in the same direction, even if that should not be possible.
MC-154873 – When breaking a block with an enchanted book with Silk Touch on it, the block drops itself.
MC-157494 – Tamed animals no longer teleport to players properly.
MC-158853 – Chests missing after converting and loading an old map from 1.7.10.
MC-159785 – Cloned block contains same item in memory.
MC-160123 – Large ferns no longer drop seeds.