bug: NavController.pop() doesn't work when leave Tabs layout.

Bug Report

Ionic version:

• 4.5.0
• v5.x
• v6.x

Current behavior:

When I call navCtrl.pop from a nested outlet which is not in a tab, it redirects back to the right tab which has some nav stack, but then navCtrl.pop doesn’t work. With ion-back-button it works fine.

Expected behavior:

NavContoller.pop() should be able to navigate to the correct page in nav stack as ion-back-button does.

Steps to reproduce:

https://github.com/sean-perkins/gh-18593-nav-pop

1. Start on: http://localhost:4200/tabs/tab1/item1
2. Click “Go to Item 2 Page”
3. Click “Go to Global Page”
4. Click “Go to Page 2 Programmatically”
5. Click “Go to Page 1 Programmatically”
6. Observe: Tab does not pop to the previous view
7. Click ion-back-button (< Item 2 Page)
8. Observe: Tab pops to the previous view

Expected:

• Clicking “Go to Page 1 Programmatically” should pop to the previous view in the tab

[EinfachHans]

Dev build works fine for us! 😊

[sean-perkins]

Updated dev-build available for testing:

npm install @ionic/angular@6.2.5-dev.11661886076.141059a8