VoiceOver failing on iOS 13.2 beta 1

A long-established app which has always worked with VoiceOver is not working on iOS 13.2.


It is as if an invisible screen were layered on top of the app screen and intercepting all the VoiceOver touches, so that instead of the normal app response one gets odd sound effects of the "You shouldn't have tapped here" variety: burbles, twitters and thumps. On one occasion a random VO rectangle appeared, which spoke the word "Settings" when tapped, though the word "Settings" occurred nowhere in the app. On another occasion some desperate taps resulted in the iPad playing "Ticket to the Moon"…


I have tested this on the iPad Pro 11".


Has anyone else encountered this, or, better still, found a way round it?


The bug has already been reported to Apple: the reference is FB7340738.