Wither skeletons glitching through walls bug.

Saplings not growing at height Y:244.

World border at 29,999,982

Tiny slimes rarely spawning in Peaceful.

Zombies rarely do 12 health points of damage in easy & hard.

Aqua Affinity not working with Prismarine items.

Mobs in slow-motion bug.

Going to the nether and coming through the portal could delete the player's Overworld data.

Going to the nether for the first time in a world could result in the player falling out of the world.

Deleting world in Hardcore Mode could cause the game to crash.

Sometimes, when you press "Save And Quit To Title," Minecraft freezes and doesn't respond, although it does save it.