Weird problem, help needed

I'm playing GWX 3 but this problem goes back to when I played GWX 2.

The problem occurs on the UZO page only. It occurs only during extremely high wind levels and high waves.

The problem: a rectangular mask intermittently covers the UZO binocular lenses for a few seconds at a time. It seems to happen when a wave covers the conning tower and then subsides when the water disipates. It is my opinion that this rectangular mask represents the image of water being seen through the UZO lens and should be located behind the UZO binocular image on this page (so you can see water through the lens, not as a rectangular mask on top) but some how has gotten out of place or on the wrong level.

This is kind of hard to explain, but I hope that I've made it somewhat clear. It doesn't affect game play too much but it is quite annoying.

Has anyone seen this problem before or does anyone have any ideas?

As most, I play with a number of mods. However, I don't think any of them would be affecting the UZO like this.