+1!
Yes/No-type items: Yes and No no longer appear in the app as choices to click. However, responding “yes” or “no” with voice works correctly.
Picker-type items: Similarly, the buttons no longer appear in the app. And I have never been able to get voice response to work, either with “Goto Button 1” or the button labels as described in Navigating Picker items with your voice.
I have version 6.3.1.556 installed on both iPhone and iPad.