I'm sure that Ford knows about the issue. I am told that a Technical Service Bulletin (TSB) is being prepared, and will be issued to dealerships, so that all of the Techs and dealer service writers know about it. This issue likely affects a small % of Focus' -- but rest assured, it is a real issue, and it has to be repaired. The repair calls for a changeout to a new power steering rack and pinion assembly. Apparently it takes about 2 hours of shop time plus a subsequent front end alignment to repair the car.
It appears that the "steering gears" parts back-order is just what is required.
Good luck -- and please post, on whether the steering rack changeout fixes the issue (I'm pretty sure it will!).