Well they replaced the shifter "assembly," but who knows how much they actually replaced (the original shifter handle is still there as I discretely marked it). Regardless, it didn't fix it, so they opened a case file on the vehicle with FCA and the engineers told them to check all the connections in the car. After another trip to the dealer, big surprise, that didn't fix it either. Service manager says the problem is leading them to believe it is something wrong electrically inside the transmission which would involve dropping it from the vehicle (just turned over 3K miles, btw). In the end even that might not fix this mysterious problem.
So now I'm joining the seriously considering lemon law club. Georgia law says 3 attempts to repair the same problem is reasonable for a non-safety issue, and this latest "attempt" was the third. If I go this route, I have to inform Chrysler in writing, and give them one final attempt to fix the problem. If that doesn't do it, then I get a replacement. Unfortunately, I'm going on a 4 month trip overseas, so this will likely have to wait.
I will let y'all know what happens... eventually.