NavigationPage breaks after some navigation forth and back

[kraemernet]

Description

NavigationPage breaks after some navigation forth and back.

Navigation_bug_maui.mp4

Steps to Reproduce

For my Git project:
Navigate to the settings subpage and back a couple of times, around 10-15 times.

Link to public reproduction project repository

https://github.com/kraemernet/MauiNavigationApp.git

Version with bug

8.0.6

Is this a regression from previous behavior?

Yes, this used to work in Xamarin.Forms

Last version that worked well

Unknown/Other

Affected platforms

Android

Affected platform versions

Android 13.0 API 33

Did you find any workaround?

No response

Relevant log output

No response

[drasticactions]

I couldn't reproduce your issue, but looking at your code...

https://github.com/kraemernet/MauiNavigationApp/blob/master/MauiApp/SettingsPage.xaml.cs#L9-L12

Instead of creating a new subpage every time you navigate, could you instead keep one instance of that page and navigate using that?

public partial class SettingsPage : ContentPage
{    public SettingsPage()
	{
        InitializeComponent();
        _settingsSubPage = new SettingsSubPage();
    }
    
    private SettingsSubPage _settingsSubPage;

    private void GoToSubPage_Clicked(object sender, EventArgs e)
    {
        Navigation.PushAsync(_settingsSubPage);
    }
}

[ghost]

Hi @kraemernet. We have added the "s/needs-info" label to this issue, which indicates that we have an open question for you before we can take further action. This issue will be closed automatically in 7 days if we do not hear back from you by then - please feel free to re-open it if you come back to this issue after that time.

[kraemernet]

As I saw your answer, I recognized that there is an 'await' and 'async' missing. If I add them, it works for me.
I also recognized it has nothing to do with the FlyoutPage, so I edited the title in case someone finds this.

private void GoToSubPage_Clicked(object sender, EventArgs e)
{
  Navigation.PushAsync(new SettingsSubPage());
}

to

private async void GoToSubPage_Clicked(object sender, EventArgs e)
{
  await Navigation.PushAsync(new SettingsSubPage());
}

Thank you for your answer and your time.