[Ionic v4] IonicModule breaks angular router / Multiple ion-router-outlets / Multiple tabs pages not working

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Bug Report

Ionic Info

Ionic:

   ionic (Ionic CLI)          : 4.0.0 
   Ionic Framework            : @ionic/angular 4.0.0-beta.0
   @angular-devkit/core       : 0.7.0-rc.3
   @angular-devkit/schematics : 0.7.0-rc.3
   @angular/cli               : 6.0.8
   @ionic/ng-toolkit          : 1.0.0
   @ionic/schematics-angular  : 1.0.0

System:

   NodeJS : v8.11.1 (C:\Program Files\nodejs\node.exe)
   npm    : 6.2.0
   OS     : Windows 10

Describe the Bug
Navigation is stuck after navigating between two components with child routes and ion-router-outlets. This works in angular with router-outlet but not after IonicModule is imported.

Steps to Reproduce
Steps to reproduce the behavior:

1. Go to https://ion-router-outlet-bug.stackblitz.io/first/tab1
2. Click through Tab 1 - 3 and see the content change.
3. Click "Second Tabs Page"
4. Click through Tab 4 - 6 and see the content change.
5. Click "First Tabs Page" (navigating you back)
6. The content is now stuck to the last tab you clicked.

Related Code
https://stackblitz.com/edit/ion-router-outlet-bug

Expected Behavior
Navigation should still work after navigating from /first to /second

The docs states that should behave as angular's

Possibly related
[Ionic v4] Returning to tabs from another page causes tabs to break #14885
#14885

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This issue is not resolved, see the following repo:

https://github.com/knutto/bug-ion-router-outlet

Ionic:

   ionic (Ionic CLI)          : 4.1.0 (C:\Users\<username>\AppData\Roaming\npm\node_modules\ionic)
   Ionic Framework            : @ionic/angular 4.0.0-beta.3
   @angular-devkit/core       : 0.7.3
   @angular-devkit/schematics : 0.7.3
   @angular/cli               : 6.1.3
   @ionic/ng-toolkit          : 1.0.6
   @ionic/schematics-angular  : 1.0.5

System:

   NodeJS : v10.8.0 (C:\Program Files\nodejs\node.exe)
   npm    : 6.3.0
   OS     : Windows 10

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@manucorporat

[ionitron-bot]

Thanks for the issue! This issue is being locked to prevent comments that are not relevant to the original issue. If this is still an issue with the latest version of Ionic, please create a new issue and ensure the template is fully filled out.