Demonstrate bug in Flutter, where Navigator behaves inconsistently

flutter_bug_in_navigator.dart

import 'package:flutter/material.dart';

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

class MyApp extends StatelessWidget {
  MyApp({super.key}) : _routerDelegate = AppRouterDelegate();
  final RouterDelegate<AppState> _routerDelegate;

  @override
  Widget build(BuildContext context) => 
    MaterialApp.router(
      title: 'Test',
      routerDelegate: _routerDelegate,
      routeInformationParser: AppRouteInformationParser(),
      backButtonDispatcher: RootBackButtonDispatcher(),
    );
}

class AppRouteInformationParser extends RouteInformationParser<AppState> {

  @override
  Future<AppState> parseRouteInformation(RouteInformation routeInformation) {
    print("#parseRouteInformation. Location is: ${routeInformation.location}");
    final AppState configuration = AppState();
    if(routeInformation.location == '/') {
      configuration.home = null;
    } else if(routeInformation.location == '/true') {
      configuration.home = true;
    } else {
      configuration.home = false;
    }
    return Future.value(configuration);
  }

  @override 
  RouteInformation? restoreRouteInformation(AppState configuration) {
    print("#restoreRouteInformation. Home is: ${configuration.home}");
    return RouteInformation(
      location: configuration.home == null ? "/" : "/${configuration.home}",
    );
  }
}

class AppRouterDelegate extends RouterDelegate<AppState> with ChangeNotifier, PopNavigatorRouterDelegateMixin<AppState> {

  @override
  final GlobalKey<NavigatorState> navigatorKey;

  AppRouterDelegate() : navigatorKey = GlobalKey<NavigatorState>();

  @override
  Widget build(final BuildContext context) {
    print("AppRouterDelegate#build");
    return Navigator(
      key: navigatorKey,
       pages: [
          const MaterialPage(child: SomePage("Empty")),
          if(_configuration.home ?? false) 
            const MaterialPage(child: SomePage("Home")),
        ],
      onPopPage: (route, result) {
        if (!route.didPop(result)) {
          return false;
        }
        return true;
      },
    );
  }

  AppState _configuration = AppState();
  @override
  AppState get currentConfiguration {
    print("#currentConfiguration. Home is: ${_configuration.home}");
    return _configuration;
  }

  @override
  Future<void> setNewRoutePath(final AppState configuration) async {
    print("#setNewRoutePath. Home is: ${configuration.home}");
    _configuration = configuration;
  }
}

class SomePage extends StatelessWidget {
  const SomePage(this.text, {super.key});
  final String text;
  @override
  Widget build(BuildContext context) {
    return Text(text);
  }
}
class AppState extends ChangeNotifier {
  bool? home = false;
}