The water processor and filters works perfectly, what makes an unwanted effect is the refraction effects on the ShaderBlow project. The “filter” one (the one that use a filter instead of a sceneprocessor) uses the same “pattern” as here.
In that topic there is a heat haze example that have the same issue, it distorts any object that cross “the line” between the camera and the distorting object, what is not realistic at all.