Baby husks, piglins, zombies, zombie villagers, and zombified piglins take suffocation damage when walking into a one block high gap

The bug

The following mobs are affected by this bug:

• Husks
• Piglins
• Zombies
• Zombie villagers
• Zombified piglins

This bug does not seem to affect drowned, which differentiates it from MC-153254.

When an affected baby mob walks up a block, and there is a block above its head, it takes some suffocation damage.