hero_animation_bug.dart

import 'package:flutter/material.dart';

void main() {
  runApp(MyApp());
}

class MyApp extends StatelessWidget {
  // This widget is the root of your application.
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      theme: ThemeData(
        primarySwatch: Colors.blue,
        visualDensity: VisualDensity.adaptivePlatformDensity,
      ),
      home: MyHomePage(),
    );
  }
}

class MyHomePage extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: GestureDetector(
        onTap: () {
          Navigator.push(context,
              MaterialPageRoute(builder: (context) => PageTwo()));
        },
        child: Container(
          width: 300,
          height: 300,
          child: Hero(
            tag: "first_element",
            child: Image(
              fit: BoxFit.fill,
              image: NetworkImage(
                "https://codepen-chriscoyier-bucket.imgix.net/10.svg",
              ),
            ),
          ),
        ),
      ),
    );
  }
}

class PageTwo extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
        body: Container(
      height: 300,
      width: 300,
      child: Align(
        alignment: Alignment.bottomCenter,
        child: Hero(
          tag: "first_element",
          child: Image(
            fit: BoxFit.fill,
            image: NetworkImage(
                "https://codepen-chriscoyier-bucket.imgix.net/10.svg"),
          ),
        ),
      ),
    ));
  }
}