A piston is being powered when it isn't supposed to

when you crate a survival world without expmentel togls on so they are off

when you are playing multiplayer you can't see there skin

fishing rods do not render

chunks will not load properly

when you teleport to a stronghold it will crash the game

Duplication issue with amethyst shards

when you place down a drip leaf

item frames are broken

Mob heads are gone and replaced by skeleton skulls