Same issue still present with the new beta release of the couatl engine.
As explained many times already on the forum, GSX, Couatl, the Addon Manager, do not have ANY effect on jetways. Clear proof of this: if those programs are not running, the ONLY thing you'll see in the scenery are....jetways.
Again, we'll have a look at it for the next update.
EDIT:We updated the AFCAD so, if you reinstall the scenery and reply YES to the question about downloading the latest AFACD, it should be fixed.