Put the summary of the bug you're having here

What I expected to happen was...:
I thought that lava was a liquid and liquids cancelled fall damage.

What actually happened was...:
i fell into lava and died of fall damage.

Steps to Reproduce:
1. fall into 2-3 deep lava from 40+ blocks
2. be in survival

I don't know if this is a bug or not sorry if it's intentional.