I do believe you are wrong and it is different. The car is still "operating" when the autostop engages if on. When you press the "off" button all power is cut off everywhere. It can't be good for the electronics; it would be like just powering off your computer without closing out programs or closing windows. Just holding the power button til it turns off; you will have all sorts of problems in the future.
Good luck anyways; hope it's covered under warranty
Interesting that it doesn't even say to put in park. https://www.fordservicecontent.com/Ford_Content/vdirsnet/OwnerManual/Home/Content?variantid=7450&languageCode=EN&countryCode=USA&Uid=G2087786&ProcUid=G1547517&userMarket=usa&div=f&vCode=&vFilteringEnabled=FalseGuess I need to look at the manual and see if letting them vehicle put itself into park could have caused this.
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