The bug

Strider can die, if it falls into the lava from height, even if there are no blocks under the lava.

How to reproduce:

1. Create a pillar of lava
2.Spawn strider in high place and knocback it into the lava.
Waiting: strider does not die, because lava slows down the fall and does not allow the Strider to reach the blocks to die
In fact: strider die, even it falls into the lava without blocks under lava