while no CA rep has come out saying this is a bug, I get the feeling it is a bug because people complained about the chainshot battles in MP anyway so I would have thought they were going to be nerfed, I hardly use chainshot anyway these days just because I couldn't capture entire enemy fleets with it after 1.0 :P it has not lessened my enjoyment of naval battle, so if you are worried I would just not use it in that case, and if you are playing mp then would have to wait for a fix I suppose