Labels

Mobs don't swim up

Unable to jump/swim upwards somethimes

When under 6 or more blocks of water, you can no longer swim upwards

Player trapped/can't get out of flowing water

Wolves spawned in water

Can't swim against the flow

Baby animals can't swim / drown

Horses can't swim or float.

Infinite air when swimming up or down under water

Squids and glow squids do not collide properly with solid blocks

Creepers unable to swim properly/ Players unable to swim up though one high air gap whilst sneaking

Iron Golem floats in water, can swim, and spins

Some mobs presenting a swimming state in the wrong place

Swimming state does not end when teleporting / jumping out of water

When swimming on the bottom of the sea, swimming is still maintained after landing

Illager beasts "bob" on top of water rather than sinking

The player can do sneak animation while he is in swimming animation

Swimming hand is stuck and can't render hand swim

Attempting to walk through flowing water constantly switches the player from swimming into normal mode

Player takes damage when exiting the water if they collide with a ceiling and an adjacent block