Status bar color change

status_bar_color.dart

import 'package:flutter/material.dart';
import 'package:flutter/services.dart';

void main() {
  SystemChrome.setSystemUIOverlayStyle(SystemUiOverlayStyle(
    statusBarColor: Colors.white,
  ));
  runApp(MyApp());
}

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      home: MyHomePage(title: 'Flutter Demo Home Page'),
    );
  }
}

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

  final String title;

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

class _MyHomePageState extends State<MyHomePage> {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text(widget.title),
      ),
      body: Center(
          child: RaisedButton(
        child: Text('Tap'),
        onPressed: () {
          _openDialog();
        },
      )),
    );
  }

  void _openDialog() {
    showDialog(
        context: context,
        builder: (BuildContext context) {
          return AlertDialog(
            title: Text('Alert Title Here'),
            content: Text('Alert Content Here'),
            actions: <Widget>[
              FlatButton(
                child: Text('OK'),
                onPressed: () {
                  Navigator.of(context).pop();
                },
              )
            ],
          );
        });
  }
}

Comment result here

Issue - flutter/flutter#49941

I tried to replicate the said issue on stable version v1.17.2, but can't replicate it. Above is the full sample code for reference. I see the status bar color change correctly.