Image Effects don't affect the full screen

Hello

I have following problem: I tried different types of water and ocean systems and everytime, the underwater image effects (and all other image effects) appear just in the upper half of the screen.

I couldn't figure out why this issue appear.

Can you please help me?

 

Hello

Problem still exists.

I created a video to clearify.

 

Does this same thing occur if you create a new empty project?

 

No. In a new project it's working.
Now, I created my own water and underwater effect with amplify shader. I will never have trouble with third party water shaders anymore