The first-person camera appears to hover around water

Occasionally when standing near water, the first person camera shifts about 3/4 of a block up. This doesn't change your actual height, as can be seen by going into third person, however, the shift does cause your crosshair to become inaccurate. It's hard to explain, so [here|https://youtu.be/fsH3Njnwq7g] is a video.