When pressing TAB cockpit controls freeze
Check your keyboard control bindings, look for anything that is bound to the TAB button.
Its something with the camera drone
Are you in Drone Camera mode? If so, Drone camera will disable flight controls until you switch back to cockpit view.
I think I was in drone mode and I did click TAB again to switch back since in the settings it said TOGGLE for it so I thought it would switch back but it didnt and the only way to switch it back is to restart the game.