[Bug] [Shell] Bottom tab back navigation is not working on Android

Description

On android, when using bottom tabs in shell, if I navigate to a new page and then navigate back by using the bottom tab bar, no navigation occurs. I am forced to use the back button.

Steps to Reproduce

1. Create an app with shell and set up 2 bottom tabs.
2. Push a new page onto the navigation stack using Shell's GoToAsync call
3. Attempt to navigate back by pressing the bottom tab bar button.

Expected Behavior

I am able to navigate back to the previous page

Actual Behavior

No navigation happens.

Basic Information

• Version with issue: Forms 4.1
• Last known good version: none that I know of
• IDE: windows and mac
• Platform Target Frameworks: Latest

Reproduction Link

Repro Project

This project is the basic shell template when making a new shell project. I changed the navigation to the item details to using a shell route instead of using the page INavigation property.

Extra info

Navigating back is the behavior found on other android apps with bottom nav bars (Target, YouTube, Spotify).