Water texture "render?" mistake

What I expected to happen was...:
A cool screenshot of my world.

What actually happened was...:
The textur have problems to scale abouth the height limit and a little bit under the height limit

Steps to Reproduce:
1. Create a world with only water.
2. Fly abouth the height limit and a little more 100 blocks .

3. look down.
3. Fly all way down and don't move your mouse.