/setblock and other fills don't properly update block entities

Creaking respawns when going to the nether and back

Axolots can be attached to new leads when being already leashed

Baby armadillos shouldn't drop scutes when brushed

Pixels not present in the palettes get erased, not kept

Vibration particle faces at a constant pitch of about 60 degrees, not pointing towards the target

"It Spreads" advancement can be granted when killing a mob that does not give experience

Sculk can spread in ancient city structures and replace soul sand with fire on top, extinguishing fires

Fortress mobs can spawn outside of fortresses

/placefeature minecraft:forest_rock doesn't send placed blocks to the client

Conversion sounds for strays & drowned is controlled by Friendly Creatures mixer, not Hostile Creatures

Lag crash and memory issues when loading of a valid custom dimensions containing igloo above the build limit

IndexOutOfBound exception hard crash when loading a simple custom dimension datapack

"Empty range decorator" spam in logs when creating a custom world

Concurrent modification exception on the lighting thread right after player teleport

Experience orb stacks that were used in the mending process lose their experience amount, even if the stack is still larger than one

Structure 'End City' and configured structure in vanilla end 'End City' use inconsistent identifiers

Structure blocks allow 48x48x48 size, but offset is still limited to +-32

structure blocks UI allow to focus on multiple field at once (cursor not switching between widgets)

Jigsaw blocks do not disappear post-gen when structure is spawned using the 'Generate' action from an initial jigsaw

Sound system warning messages are spamming the system log

Explosions drop random loot at random positions of destroyed blocks

Wierd Z-fighting on the border of ice and water with blocks not-near the player

Taming a parrot displays particles offset from the animal

Players turn dark when stepping on soul sand.

Instamining a block doesn't reset block breaking progress of a block mined previously

water render in boats.

Unacceptable client performance with even very simple slimestone contraptions

Trees now require much more free space around them to grow

Clicking with both mouse buttons on an empty item frame deletes item in hand

High CPU spawning component with a player placed / flying > 128 blocks above the oceans

When dispenser places shulkerbox it decreases its stack twice.

Cat's natural spawning causes Null Pointer Exception

Spawning causes massive TPS CPU load on a flat world.

Entities (Villagers) cause massive lag when attempting to pathfind

Chunks won't unload with other chunks with entities in them

Glass is not transparent

Shulkers do not teleport correctly when going through a portal

Rebinding mouse attack key action to a keyboard prevents from sending constant "attack" action

Villagers pick up beets, and share them with other villagers like food, but won't breed with beets

Phantoms can spawn inside/colliding with blocks

Structures from old worlds don't regenerate if opened with 1.13 standalone client/server

Server Watchdog shuts down the server due to 60s tick despite server being responsive albeit slow

Llamas, unlike horses, can be kept feeding hay bales even if in love mode

Distributed binaries for client and server are 3 times the size as before

Parrots unrestricted spawning causing world to inevitably crash from the number of entities.

Concrete powder changes to white when dropped in a lazy chunk

Observers don't update properly blocks when retracted