Opening your Inventory in 20w48a right before falling to your death might prevent death.

(This was tested in 20w48a, and I fell from precisely 25 blocks in the air. I'm sorry I couldn't film this, I don't know how to :/ )

 

If u fall down from 25 blocks and press e for inventory once you hit your max velocity, this might prevent your fall damage entirely. I don't know if this works on servers. If someone knows, please tell me and I will add a video file.