In FlyoutPageSample, The Navigationbar is removed when we go back and open the app again in Android.

I am using this sample as a base for my Maui apps for navigation using Flyout.
https://github.com/dotnet/maui-samples/tree/main/6.0/Navigation/FlyoutPageSample

I am not sure about other platforms but this happened in Android platform.

When we start the app from beginning (Fresh start), the navigation bar and hamburger icon are displayed good.
However, if we go back and app is sent to background and then open the app again, notice that the navigationbar is removed from the Page.

The Navigationbar should be visible even if we go back and open the app again.