Mobs constantly jump when walking on snow layers

Mobs can actually jump around in the snow instead of walking around, is this a bug, or is this a interesting feature?

Steps to Reproduce:

1. Find a snowy biome or mountain.
2. Spawn a mob on the snow layers.
3. Wait for the mob to walk.

Observed Results:
The mob constantly jumps.

Expected Results:
The mob should walk normally.

Fixed Versions: 1.17.40.23 Beta

Note: This Bug Does Not Work In 1.17.30 Update.