I would be nice if they would at least acknowledge one of these bug reports.
Correction to my post above: You can fire manually and aim the guns from the co-pilot position, I just either forgot how to lower his sight with my mouse, or the mouse hotspot for it is gone. Key worked once I looked up the mapping. So it's just the AI that's got problems.
Also finding a lot of the controls have changed the direction they rotate when clicked with the mouse buttons. And the radio/intercom selector switch pops up the annoying radio menu when set to intercom, which I keep accidentally doing as that's one of the controls that's reversed mouse click directions.