Flutter Keyboard focus bug: Keyboard will automatically hide when input is covered by keyboard

main.dart

import 'package:flutter/material.dart';

class FocusKeyboardHidingDemo extends StatefulWidget {
  @override
  _FocusVisibilityDemoState createState() => new _FocusVisibilityDemoState();
}

class _FocusVisibilityDemoState extends State<FocusKeyboardHidingDemo> {
  ScrollController _scrollController = new ScrollController();
  @override
  Widget build(BuildContext context) {
    return new Scaffold(
        resizeToAvoidBottomPadding: true,
        appBar: new AppBar(title: new Text('Keyboard visibility / focus')),
        body: new Form(
            child: new ListView(
                children: new List.generate(10, (index) {
                  return new TextFormField(

                  );
                }).toList(),
            ),
        ),
    );
  }
}

void main() {
  runApp(new MaterialApp(home: new FocusKeyboardHidingDemo()));
}