use_cooldown component doesn't work as expected on spawneggs.

End Crystals don't work with advancement criterias such as "player_hurt_entity", "player_killed_entity" (etc.)

The horizon turns black upon going below Y62.

Summoning a Pillager with {} or any other NBT as long as you use brackets will spawn the pillager without its arms.

Stained glass can be seen through some of the particle effects.

Small amounts of TNT causing massive frame drops.

Skeleton, zombie, husk, stray and wither skeleton will attack baby turtles

Spectator mode will still allow the swimming animations

Zombie Horse texture isn't showing up & middileclicking them

Opening a double (trapped) chest plays the open and close sound twice

Horse armor textures z-fighting

Elytra's and minecarts