Water clipping...

I have an "air travel" system in my game which happens just a little bit above the highest peak of the tallest mountain in my world. When you get up that high (X position is around 400), and look around, (especially near the world limits), the entire water clips and disappears at certain angles. (The closer to the world limits you get, the more easily it clips the water off.)

I made a video to illustrate this which I have uploaded to youtube:

www.youtube.com/watch?v=NboAMmgLmko