Empty Containers don't render for Flexible, Flutter

FlexibleWithEmptyContainers.dart

import 'package:flutter/material.dart';

void main() => runApp(MyApp());

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: "Empty Containers aren't rendered",
      debugShowCheckedModeBanner: false,
      theme: ThemeData(
        primarySwatch: Colors.blue,
      ),
      home: Column(
        children: [
          Container(color: Colors.cyan),
          Container(color: Colors.teal),
          Container(color: Colors.indigo),
        ],
      ),
    );
  }
}