flutter: ReorderableListView issue demo (rebuilds children every time even if Key-Type of children wasn't changed)

main.dart

import 'package:flutter/material.dart';

void main() {
  runApp(MyApp());
}

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: MyHomePage(title: 'ReorderableListView issue demo'),
    );
  }
}

class MyHomePage extends StatefulWidget {
  MyHomePage({Key key, this.title}) : super(key: key);

  final String title;

  @override
  _MyHomePageState createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  List<int> myData = List.generate(10, (index) => index);

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text(widget.title),
      ),
      body: Center(
        child: ReorderableListView(
          children: _buildTiles(),
          onReorder: (_, __) {},
        ),
      ),
      floatingActionButton: _buildReorderButton(),
    );
  }

  Widget _buildReorderButton() {
    return FloatingActionButton(
      child: Icon(Icons.refresh),
      onPressed: () => setState(() {}),
    );
  }

  List<Widget> _buildTiles() {
    List<Widget> tiles = myData.map((int i) => MyListTile(i, "tile $i", key: ValueKey(i),)).toList();
    return tiles;
  }
}


class MyListTile extends StatefulWidget {
  final int data;
  final String title;

  MyListTile(this.data, this.title, {Key key}): super(key: key);

  @override
  _MyListTileState createState() => _MyListTileState();
}


class _MyListTileState extends State<MyListTile> {
  int _curData;

  @override
  void initState() {
    super.initState();

    _curData = widget.data ?? 0;
  }

  @override
  Widget build(BuildContext context) {
    print("build ${widget.data}");

    return Container(
      padding: const EdgeInsets.symmetric(vertical: 20.0, horizontal: 30.0),
      child: Row(
        mainAxisAlignment: MainAxisAlignment.spaceBetween,
        children: [
          Text("${widget.title}. Cur value is: $_curData"),
          IconButton(icon: Icon(Icons.add), onPressed: _increment)
        ],
      ),
    );
  }

  void _increment() {
    setState(() => _curData ++);
  }
}