Dramatical performance decrease ever since 21w10a.

Activating or breaking huge Nether portals stops rendering of beacon beams for a short amount of time.

Netherite sword and boots textures have transparent pixels

Player model in inventory inverts lighting when some items are in hotbar

Item frame inside pressure plate has Z-Fighting

Semi-transparent pixels on skin's outer layer renders wrongly in inventory model

Observer's texture is faulty

End Crystals use old Bedrock texture

Magma Cubes don't drop Magma Cream

Scoreboard has less opacity

Leaves of acacia trees generate differently than before

Breaking animation on grass block is miss-coloured

Signs use the old texture on the back.

Held map doesn't respect light level

Inventory player model reacts to light level

Looking at snow from a certain angles results in x-ray

Some particles don't render behind translucent particles

Clouds are generated with offset to east and south

Creative menu corners have opacity issues; outlines have no transparency

Water doesn't have any mipmaps

Smooth lighting sometimes isn't very smooth

Black border when holding map.

Large chests are z-fighting with themselves when the two chest blocks have different light levels

Text on signs seem to not be affected by shading, and therefor can be really bright.

Map background is weird

Mipmap levels don't apply/work when switching into spectator mode.

Block animations are way too fast

Some items in the inventory gui don't have shading. And sometimes the shading is too harsh.

Parts of horse texture is transparent

Can't place blocks/items using off-hand while holding shovel in main hand.

F3 Debug menu is missing GPU and Renderer

Alpha Opacity items make NBT blocks invisible when item is dropped in front of NBT block.