Whenever DriveBy with All Weapons is enabled, some weapons will cause the weapon controller to "stick" and be unable to be used. (Namely "grenade" type weapons.)
Switching weapons returns the view but weapons remain unable to be used until you leave the vehicle.
Also, this prevents you from exiting the vehicle normally, though InstaSeat still works.
Steps to reproduce
Enable Drive By With All Weapons, get in a car.
Switch to grenades, try to aim with right click.
Switch off grenades to any other weapon or unarmed.