Tested on the RC of 1.82.
When a smoke screen is deployed from the Speedboat, the smoke doesn't float on the surface and sinks into the ocean, check the screenshot.
In the Rear gunner's seat with the static Minigun, you're unable to see where you're shooting if you're zooming in. The view isn't centered vertically on the crosshair. It is possible to manually adjust the view with the numpad keys, but the default view isn't set well.