Broken vacuum line normally would bring the MIL (check engine light) on.
As far as the Power Window concern, (personally) Dodge should have a Recall on the Regulators, because they seem to be a regular problem.If the Passenger side was bad, chances are the Driver will be next or as bad, if there is no unusual wear that caused it.Dodge Regulators usually break or the cable runs wear out very fast, causing the window to stop, drop or not work.
I would also want the Window Motor / Regulator replaced as a unit (most are), but some dealers & shops don't
Not a miracle, a coincidence, because, when the repair was made on the Driver door, the plug & switch was moved, unpluged, pulled, etc., which would or could cause a better or different connection via ground & voltage, since the Passenger Window power & ground come from the driver side first. Not unusual
As far as the passenger "broken regulator", If you have physically seen the regulator cable broken or stretched, then I will be the first to admit it is a miracle.Not trying to argue, but have replaced many of these & what you have described would not be possible, "IF" the regulator was physically observed to be broken & was inoperative.But if the regulator was not physically shown to be broken, then the Motor, lubrication, drag, etc., could have caused the same problem
Hate to say it, but that may come yet....(personal opinion)