I'm occasionally getting the same "small screen" issue in Waze that some others have reported in Navigon. It seems to occur when I do something with the phone itself, like use the phone's touch screen or turn the phone on it's side (i.e. to landscape). Not sure which. I've also been getting the keyboard appearing on the phone rather than on Appradio sometimes in Waze.
Otherwise the new beta 17 is working great for me! Thanks Mike!
I'm on Appradio 2, iPhone 5, ios 6.1.2.