notifyListeners() doest not rebuild on adding new page

[vkmaxcooldude]

notifyListeners() does not force rebuild the Navigator in my modified

import 'package:flutter/material.dart';
import 'package:demo_app/UI/auth/auth.dart';
import 'package:demo_app/UI/splashscreen.dart';

enum ParentRoutes { SplashScreen, Auth, Dashboard, Notification }

class ParentRouteConfig {
  const ParentRouteConfig(this.myRoute, [this.arguments]);
  final ParentRoutes myRoute;
  final Object arguments;
}

class ParentRouteInformationParser
    extends RouteInformationParser<ParentRouteConfig> {
  final Map<String, ParentRoutes> _routeStringToEnum = {
    "/": ParentRoutes.SplashScreen,
    "/auth": ParentRoutes.Auth,
    "/dashboard": ParentRoutes.Dashboard,
    "/notification": ParentRoutes.Notification,
  };
  @override
  Future<ParentRouteConfig> parseRouteInformation(
      RouteInformation routeInformation) async {
    final String routeName = routeInformation.location;
    // Change to Map
    final ParentRoutes route = _routeStringToEnum[routeName];
    if (route == null) throw Exception("Unknown Route");
    return ParentRouteConfig(route, routeInformation.state);
  }

  @override
  RouteInformation restoreRouteInformation(ParentRouteConfig configuration) {
    switch (configuration.myRoute) {
      case ParentRoutes.SplashScreen:
        return RouteInformation(location: '/', state: configuration);
      case ParentRoutes.Auth:
        return RouteInformation(location: '/auth', state: configuration);
      case ParentRoutes.Dashboard:
        return RouteInformation(location: '/dashboard', state: configuration);
      case ParentRoutes.Notification:
        return RouteInformation(
            location: '/notification', state: configuration);
    }
    throw 'unknown';
  }
}

class ParentRouterDelegate extends RouterDelegate<ParentRouteConfig>
    with ChangeNotifier, PopNavigatorRouterDelegateMixin<ParentRouteConfig> {
  @override
  final GlobalKey<NavigatorState> navigatorKey = GlobalKey<NavigatorState>();

  final List<Page<void>> _pages = <Page<void>>[
    MaterialPage(
        key: ValueKey("/"),
        name: "/",
        child: SplashScreen(),
        arguments: ParentRouteConfig(ParentRoutes.SplashScreen)),
  ];

  List<Page<void>> pages() => _pages;

  ParentRouteConfig _currentConfig;

  set currentConfiguration(ParentRouteConfig config) {
    if (config != null) _currentConfig = config;
    notifyListeners();
  }

  @override
  Future<void> setNewRoutePath(ParentRouteConfig configuration) async {
    currentConfiguration = configuration;
  }

  void addNewPage(ParentRouteConfig configuration) {
    if (configuration.myRoute == ParentRoutes.Auth) {
      currentConfiguration = configuration;
      _pages.add(
        MaterialPage(
            key: ValueKey("/auth"),
            name: "/auth",
            child:
                Authentication(currentScreen: (configuration.arguments as int)),
            arguments: configuration),
      );
    }
  }

  // For web application
  @override
  ParentRouteConfig get currentConfiguration => _currentConfig;

  bool _handlePopPage(Route<dynamic> route, dynamic result) {
    final bool success = route.didPop(result);
    if (success) {
      if (_pages.length > 1) {
        _pages.removeAt(_pages.length - 1);
        notifyListeners();
      } else {
        navigatorKey.currentState.pop();
      }
    }
    return success;
  }

  @override
  Widget build(BuildContext context) {
    return Navigator(
      key: navigatorKey,
      pages: pages(),
      onPopPage: _handlePopPage,
    );
  }
}```

I expected to simplify it and it should rebuild on `addNewPage(ParentRouteConfig configuration)`. The pages get added but the UI doesn't render until I use ValueKey Instead of NavigatorKey

[chunhtai]

This looks like a bug in framework, can you file a bug in flutter/flutter?