Hardcore disables vehicle optics

It seems that the vehicle optics crosshair is tied to the setting that disables crosshair for infantry. When using the tank you only get the optic crosshair when zooming in. Heli gunner has no crosshair at all in the optic, same with the airplanes. Havent tried the APC yet but I imagine its the same as the tank with only getting the optic crosshair when zooming in. 

No crosshair on the optic in tank.

Get the crosshair when zooming it.

Nothing at all when heli gunner 

No main gun or AA optic at all in planes.

Unlink the vehicle optics crosshair from the infantry crosshair so I dont have to keep my tank zoomed in all the time to see where im aiming.