Repository: flutter
Issue: ReorderableListView: Overlay does not scale and is funky when ReorderableListView is inside a FittedBox
Labels: framework,f: material design,has reproducible steps,P3,found in release: 2.5,found in release: 2.6,team-design,triaged-design

<!-- Thank you for using Flutter!

     If you are looking for support, please check out our documentation
     or consider asking a question on Stack Overflow:
      * https://flutter.dev/
      * https://api.flutter.dev/
      * https://stackoverflow.com/questions/tagged/flutter?sort=frequent

     If you have found a bug or if our documentation doesn't have an answer
     to what you're looking for, then fill out the template below. Please read
     our guide to filing a bug first: https://flutter.dev/docs/resources/bug-reports
-->

## Steps to Reproduce

<!-- You must include full steps to reproduce so that we can reproduce the problem. -->

Here is a minimal main.dart that shows the problem:
<details>
  <summary>Example</summary>

```
import 'package:flutter/material.dart';

void main() => runApp(const MyApp());

/// This is the main application widget.
class MyApp extends StatelessWidget {
  const MyApp({Key? key}) : super(key: key);

  static const String _title = 'Flutter Code Sample';

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: _title,
      home: Scaffold(
        appBar: AppBar(title: const Text(_title)),
        body: 
        SizedBox(
          width: 500,
          height: 500,
          child:
        FittedBox(
          fit: BoxFit.fitWidth,
          child: SizedBox(
            width: 1000,
            height: 1000,
            child:
                  MyStatefulWidget(),
            
          )

        )
          )
      ),
    );
  }
}

/// This is the stateful widget that the main application instantiates.
class MyStatefulWidget extends StatefulWidget {
  const MyStatefulWidget({Key? key}) : super(key: key);

  @override
  State<MyStatefulWidget> createState() => _MyStatefulWidgetState();
}

/// This is the private State class that goes with MyStatefulWidget.
class _MyStatefulWidgetState extends State<MyStatefulWidget> {
  final List<int> _items = List<int>.generate(50, (int index) => index);

  @override
  Widget build(BuildContext context) {
    final ColorScheme colorScheme = Theme.of(context).colorScheme;
    final Color oddItemColor = colorScheme.primary.withOpacity(0.05);
    final Color evenItemColor = colorScheme.primary.withOpacity(0.15);

    return ReorderableListView(
      padding: const EdgeInsets.symmetric(horizontal: 40),
      children: <Widget>[
        for (int index = 0; index < _items.length; index++)
          ListTile(
            key: Key('$index'),
            tileColor: _items[index].isOdd ? oddItemColor : evenItemColor,
            title: Text('Item ${_items[index]}'),
          ),
      ],
      onReorder: (int oldIndex, int newIndex) {
        setState(() {
          if (oldIndex < newIndex) {
            newIndex -= 1;
          }
          final int item = _items.removeAt(oldIndex);
          _items.insert(newIndex, item);
        });
      },
    );
  }
}

```
</details>
**Expected results:** <!-- what did you want to see? -->

What's happening is expected, given what I know about how ReorderableListView and overlays works. But what would be desired is that the overlayed item is the same size as the other items, as it is when it isn't in a fitted box.

**Actual results:** <!-- what did you see? -->
[Here's a video](https://vimeo.com/583072092).  The overlayed item is the exact size as it would be if it weren't in a fittedBox, while the other items are scaled. Also the animation is a bit funky. Also, the item contents are missing until you let go of it.
<details>
  <summary>Logs</summary>

<!--
      Run your application with `flutter run --verbose` and attach all the
      log output below between the lines with the backticks. If there is an
      exception, please see if the error message includes enough information
      to explain how to solve the issue.
-->

```
```

<!--
     Run `flutter analyze` and attach any output of that command below.
     If there are any analysis errors, try resolving them before filing this issue.
-->

```
```

<!-- Finally, paste the output of running `flutter doctor -v` here. -->

```
Ran it on dartpad using Flutter 2.2.3. Pretty sure this isn't an environment or dependency issue.
```

</details>