Basically the title. The water behind transparent (not invisible) players (e.g. players in spectator) should render, but instead, it does not. Imagines shall be attached soon

Steps to reproduce:

1.  Grab a pool of water and a friend in spectator
2.  While looking at the water in spectator mode, tell your friend to walk in front of you.
3. Observe

What is supposed to happen: You can still see the water

What happens: The water behind your friend stops rendering 

Possibly related to MC-168745