I have not contacted them yet. But I've been experimenting with the problem the last few commutes to work. I started downloading some appradio apps to the phone for shits and giggles to see how/if they would work with this unit.
The past two mornings, I did not experience the issue if I launched pioneer carmediaplayer and then plugged in the phone to the avic. I did have the switching problem in the afternoon commute though. I cannot figure what exact behavior causes this issue.
Has the issue returned for you chitown?