If you press the sprint button after you got back to water surface (pressing space-bar) you can "walk on water". Probably because the addition of "Going in and out of swimming should now feel smoother" feature of this snapshot.
You basically sprint and you froze in that status allowing you to "walk on water".
Here is a video: https://youtu.be/31yTHozJVFs
Comfirmed. Trying to reproduce.