Try this layout. When I launch the app on iOS with voiceover on, the scroll view is focused but nothing is read aloud.

@override
Widget build(BuildContext context) {
  return Center(child: SingleChildScrollView(child: Text('hello')));
}

Voiceover does read out "Possible text: hello" if you either:

• tap the scrollview
• swipe to navigate forward and then back

However I'd expect voiceover to read the contents on the initial focus when the screen appears. If I remove the scrollview, then it reads out 'hello' on launch.

This might be an iOS only issue, I haven't tried on android HW yet.