Banner markers on maps cause severe lag, especially when using high-res fonts

Turtle home beach detection looking one block too deep

Turtle eggs hatching broken, game checking for sand one block too deep

End crystal beam is dark / desaturated

Returning from certain menus to the main menu using "Esc" no longer changes the splash text

Some custom item models appear dark in the inventory

Flat items no longer render behind transparent textures

Banners appear blank white for a split of a second when placing them

Shulker box inside textures are invisible

All item frames disappear when loading world

Iron farms stop working and cannot be reset without replacing the villagers

Game crashes when generating some of the new plains villages

Old world doesn't save map markers in 1.13

Doors and Beds make double breaking sounds

Remaining ascii.png in a resource pack causes all in-game font to display gibberish

HD SGA font doesn't work anymore

Crash on generating new world

The firework light flash is missing

Crash when opening a world from 18w21b

Maps in item frames show shading problems

Grass blocks spread grass to dirt blocks underwater

Items aren't faster on blue ice when being transported by a water current

Dead Coral has only one variant, showing a texture pattern inconsistent with the living corals

The fins of dying cod and some tropical fish show z-fighting

Item flow speed in upward bubble columns inconsistent with flow speed of other entities

Turtle eggs connect to fences, walls, iron bars and glass panes

Large oak trees fail to generate in all biomes with the new generator

Smelting a cactus to produce cactus green doesn't work

"Balloon oak" tree variant generates upside down, with often only stumps visible on the surface

Zombie Horses are invisible

Horse skin and armor textures not applied correctly to horse model

Red Giant Mushrooms generate with 5 blocks having wrong blockstates, thus showing wrong faces

Functioning clock and compass in recipe book

Option to enable launching the game in maximised window mode not displayed

Transparent elytra textures appear opaque

Throwing splash and lingering potions (any type) produces splash water bottles which have no effect

Glass blocks in hotbar toggle backface culling on/off when selecting/deselecting a stained glass block

Flowing water surface not visible seen from inside flowing water blocks

Translucent parts of stained glass items not visible in 3rd person mode

Rendering error when looking at water through ice, portals, stained glass, etc.

/gamerule commandBlockOutput false no longer works

World loading screen uses wrong font

The Mojang logo is blurry

Lava fizz sound plays whenever a flowing lava block destroys an air block