Summary:
Falling into a shallow lava pool doesn't break your fall.

What I expected to happen:
I expected a shallow lava pool to break your fall.

What actually happened:
Falling into a shallow lava pool doesn't break your fall.

Steps to reproduce:
1. Dig a one meter deep hole.
2. Fill it with lava.
3. Drink a fire resistance potion.
4. Fall from a great height into it.