I previously owned a 1999 SE Sport with a factory power moonroof. I can say beyond the shadow of a doubt that the car's moonroof didn't close after the car was turned off. So there are two possibilities. One is that your moonroof is aftermarket. Two is sometimes Ford gets random parts and things like that happen. My grandma had 2 different 1997 Lincoln Continentals that were built 1 month apart. The one built in January had a one touch open factory sunroof. It didn't one touch or auto close. The one built in March also had a factory sunroof. It had one touch open, one touch close, and it closed the roof after ignition off. Another 1997 we test drove with a factory sunroof built in June worked the same way as the one my grandmother had that was built in January.
