It's not a bug, per se.
It's bad design.
Yes, the tub is supposed to be there. And yes, updated conning towers provide a cutaway. Those aren't issues.
The issue the that as the camera pans, it pans outside of the tub during certain angles, causing you to have a lovely view of the tub wall and not the gunsights. What should happen is the camera should either be moved in closer to the rotational axis or the tub wall should be made transparent during AA gun use. In real life, if you're using the gun, your body is not going to pass through the metal tub wall. The camera view ingame does. Bad design, not bug. The camera works as designed.... and that's the problem
Pull the camera about 6 inches in to the center of the station and it won't be an issue.
-m