The Bug:
The player can climb out of powder snow whilst wearing leather boots, whilst walking against a block, without having the need to jump.
Steps to Reproduce:
Build the setup shown in the attachment below.
Equip some leather boots.
Walk into the powder snow.
Whilst inside of the powder snow, walk into the wall next to it.
→ ❌ Notice how you can climb out of powder snow whilst wearing leather boots, whilst walking against a block, without having the need to jump
Can confirm. This may be intended, because the exact same thing happens with scaffolding and climbing powder snow with leather boots work exactly the same as climbing scaffolding. (With the difference that climibing powder snow is now faster than scaffolding as of 21w13a)