Water is invisible when you reload the world

When the player is under water, looks up, then reopens their world; the water disappears.

• original text -
  Water is invisible when I go out and enter the world while I'm under water. play: go under the water and then exit and enter the same world.

Steps to reproduce

• Go underwater in a lake or ocean.
• Look up.
• Reopen your world and you will see clouds but no water just blue tenting.