You take what seems like slight fall damage when sprint jumping while holding spacebar

I noticed that for some reason, if I sprint while holding space, I get fall damage every few seconds.

https://imgur.com/a/pLTpqVp 

How to reproduce:

1. Sprint in a straight line on any surface (I tested it and it seemed to also happen on regular grass blocks in the overworld)
2. Make sure to hold space while you're sprinting with ctrl+w

Expected result: I sprint jump as I normally could in previous versions, without taking fall damage

Observed result: I take about half a heart of fall damage every few seconds