Update on this thread. I had the same issue, the doors used to open together. What I found was that the latch on the screen door had actually loosened. Once I repositioned it and tightened it, the doors open and closed together once again.
2019 Chevy express 2500 Van Coversion. 2017 Jayco 23MRB: 26' total and Glacier Package. 2 Renogy solar panels. Married 46 years. Haley the mutt, 3 years old. "Excited to learn new things everyday and humbled by those who offer to help."