When i was testing my previous bug, i noticed this bad rendering of sea when looking through some choppers' the windows (i saw this on "KA-60" and little bird - MH-8 ?)
looks like other-newer choppers doesnt have this problem - i didnt try them all, but ghosthawk, commanche and mi-48 were ok.
Just look on attached screenshot {F20791} {F20792} {F20793} {F20794}