1.17.1 Release Candidate 2

Block cracks remain on blocks in adventure mode when losing focus of them

You can switch fishing rods while the line is still cast

Skeletons, bogged, and strays can shoot behind themselves when their movement speed attribute is set to zero

Entity shadows not showing on transparent blocks (slabs, stairs, cauldron, hopper), but showing on block below

Snow golems attack creepers

The plants of sunflowers don't connect to their stems

Some events / actions do not trigger observers

Evoker fangs can only spawn on full blocks, not slabs

Non cubic blocks do not properly push out items

Some entities do not directly activate tripwire and pressure plates

Sunflowers are stretched

Item frames / glow item frames placed on the ground z-fight with pressure plates / rails / carpets

Updating blocks creates lag spikes proportional to geometry in chunk section

An entity that gets the NoGravity tag while falling does not stop moving until 15 seconds

Anvils that break upon landing play the repair sound as well

Drowned mob has no throwing animation

Magma cubes can jump fences whereas slimes can't

You leave a minecart/boat if you and the minecart get teleported

Waterlogged stained glass causes rendering glitches when moving around it

Missing texture of water on top of blocks or air

Random dirt block and grass block spawn in the village paths