I figured this out and the situation is rather bizarre. I was missing the coupler piece in the photo. The electronic servo pushes and pulls the door handle mechanism. Without the coupler it can lock the door when the servo pushes out, but it can't unlock because it pulls and is not coupled to the handle mechanism. The bizarre thing is that that piece has not been installed as far as I can tell for months. The coupler piece has been sitting on my desk and eventually went in the trash can because I could not figure out what it was for. All the while the door handle seemed to function normally. Anyways, I suspected the coupler piece was a door mechanism piece but everything was working. Once I started having this issue I fished it out of the trash and installed it. There is even a separate part number for that piece, 3B0862247.
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