Alignment Issue when labelText and prefixIcon used in TextField

hint_text_prefix_icon_alignment_issue.dart

import 'package:flutter/material.dart';

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

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      theme: ThemeData(
        primarySwatch: Colors.blue,
      ),
      routes: {
        '/': (context) => HomePage(),
      },
    );
  }
}

class HomePage extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('hintText and prefixIcon Issue'),
      ),
      body: Padding(
        padding: const EdgeInsets.all(8.0),
        child: Column(
          children: <Widget>[
            TextField(
              decoration: InputDecoration(
                isDense: true,
                prefixIcon: Icon(
                  Icons.lock,
                ),
                hintText: "Password",
              ),
              obscureText: true,
            ),
          ],
        ),
      ),
    );
  }
}