Custom sounds suddenly disabled

Marker armor stands go through walls

Some translucent parts of entities are rendered behind translucent blocks, block entities and some entities (depending on loading order)

/tping entities results in teleportation relative to the player

Entities with NoAI no longer ignore the Motion tag

Leads in unloaded chunks break, become invisible or connect to an invisible target far away

Fake players in scoreboards don't show up when the display of the objective is in 'list'

A player with Elytra's camera position changes when sneaking while in midair

Block placing is glitchy for LAN guests

Sometimes placing command blocks in certain positions causes lag spikes

Blocks on head don't rotate horizontally for other players

Command blocks sometimes don't load their GUI for LAN guests, even after long periods of time

Constantly executing /tp ~ ~ ~ glitches your position

Items on locked hoppers don't get in the hopper after it was unlocked

Rarely, you'll hear the sound 'minecart.base' when opening a world

Giving a guardian NoAI while he is charging his laserbeam freezes the laserbeam

Chunks errors are extremely common in multiplayer

Sometimes players are not invisible even under the invisibility effect

Snowballs sometimes hit the player that threw them

Bold text in /tellraw combined with links positioned incorrectly

A horse with armor that has SkeletonTrap:1b yields one horse with a white texture

Iron Golems attack all mobs

Some command blocks don't work on all computers

In /tellraw, tag names have to be delineated with double quotes.

Middle clicking a mob gives you a blank spawn egg

Command blocks crash the game in 15w33a

Crashing when loading the game

Teleporting to stationary non-player entities does not copy rotation data

When riding an entity and going into third person view mode, your head is rendered incorrectly

[Multiplayer?] Player hits will sometimes increase by a very high amount, such as hitting with bare hands may rarely deal 3 hearts

/tp will show 1-3 frames of the middle between where you were and where you are teleported to

When having blindness effect, sprinting is impossible

Random 1 block biome generating?

The "Overpowered" (Notch apple) achievement is misplaced

Loading banners in Creative Menu for the first time since opening the game causes a short freeze

Hostile entities will despawn in spectator mode

Customized option select crash

Sometimes a minecart sound plays/subtitle shown when loading a world

Leads in unloaded chunks break, become invisible or connect to an invisible target far away