Bad state: Future already completed

[Naamapps]

Hi,
I know there is already an issue with the same error, but I don't think this is the same scenario.
The error occurred when the current visible route is a sub-route of a router, and you're pushing a root route above the sub-route, then quickly dismiss it by tapping the android back button.
It will be easier for you to set the root route as a CupertinoRoute with fullscreenDialog: true, as the animation is slower.
Try going back just before the route animation ends.

I cannot share the full code as the app is private unfortunately, I hope my description of the problem is clear.
Thanks :)

Partial Code:
So the issue is when inside a settings sub-route (pushed via Navigator.of(context) - important to say), and then with a bottom nav bar button push the CreateActionRoute, and quickly pop it via android back button, it will throw the error - but only when the sub-route is the current visible route.

List<AutoRoute> get routes => [
        AutoRoute(
          page: HomeRoute.page,
          initial: true,
          children: [
            // ..... other routes 
            // .....
            AutoRoute(
              page: SettingsRouter.page,
              path: 'settings',
              children: [
                AutoRoute(
                  page: SettingsRoute.page,
                  initial: true,
                  path: '',
                ),
              ],
            ),
          ],
        ),
        CupertinoRoute(
          page: CreateActionRoute.page,
          fullscreenDialog: true,
          path: '/create-action',
        ),
      ];

Full Error:

Bad state: Future already completed

The relevant error-causing widget was:
  AutoRouteNavigator
  AutoRouteNavigator:file:///Users/naamapps/.pub-cache/hosted/pub.dev/auto_route-8.1.3/lib/src/router/controller/auto_router_delegate.dart:265:16

When the exception was thrown, this was the stack:
#1      Route.didComplete (package:flutter/src/widgets/navigator.dart:423:19)
#2      Route.didPop (package:flutter/src/widgets/navigator.dart:401:5)
#3      OverlayRoute.didPop (package:flutter/src/widgets/routes.dart:78:36)
#4      TransitionRoute.didPop (package:flutter/src/widgets/routes.dart:307:18)
#5      LocalHistoryRoute.didPop (package:flutter/src/widgets/routes.dart:869:18)
#6      _RouteEntry.markForPop (package:flutter/src/widgets/navigator.dart:3314:36)
#7      DefaultTransitionDelegate.resolve.handleExitingRoute (package:flutter/src/widgets/navigator.dart:1102:28)
#8      DefaultTransitionDelegate.resolve (package:flutter/src/widgets/navigator.dart:1141:7)
#9      TransitionDelegate._transition (package:flutter/src/widgets/navigator.dart:918:53)
#10     NavigatorState._updatePages (package:flutter/src/widgets/navigator.dart:4177:43)
#11     NavigatorState.didUpdateWidget (package:flutter/src/widgets/navigator.dart:3837:7)
#12     StatefulElement.update (package:flutter/src/widgets/framework.dart:5659:55)

[Milad Akarie]

@naamapps can you check of the latest release fixes your issue?

[Naamapps]

Latest version did fix the issue! So quick and supportive, you're the best @Milad-Akarie !