When you ride a Strider, or find a Zombified Piglin riding it or a baby Stider on top of it, the rider has their shadow shown when riding a Strider on lava.

How to reproduce:

• Find a Strider
• Put a saddle on it
• Ride it
  For the second and third step, if you found a Strider being ridden by a Zombified Piglin or has a baby Strider on top of it, you can ignore the step.

Observed result: The rider's shadow is still shown when riding the Strider on lava.
Example:
   

Expected result: The rider's shadow should not be shown when riding the Strider on lava.
Example (using Java Edition as an example):