Cupertino list tile separator is bad

main.dart

import 'package:flutter/cupertino.dart';

void main() {
  runApp(
    CupertinoApp(
      home: CupertinoPageScaffold(
        child: CupertinoListSection(
          children: <Widget>[
            CupertinoListTile(title: Text('Foo')),
            CupertinoListTile(title: Text('Bar')),
          ],
        ),
      ),
    ),
  );
}