Double tap gesture NullReferenceException when navigating

[konrad-gora]

Description

I have a problem with the double tap gesture. If it triggers navigation, I get a NullReferenceException

The error doesn't show if I use a different gesture (swipe).
I'm using this trick in navigation because there is no reason to return to a page with GestureRecognizers (FirstPage), I always want to return to MainPage.

The problem exists only on Android (I'm using Samsung A52s with Android 13). When I was trying to run it on Windows, I couldn't reproduce the error. Also, this problem appeared when I migrated to .NET 8, on NET 7 it works correctly.

Steps to Reproduce

        <VerticalStackLayout.GestureRecognizers>
            <TapGestureRecognizer NumberOfTapsRequired="2" Tapped="OnGesture" />
            <SwipeGestureRecognizer Direction="Up,Down,Left,Right" Swiped="OnGesture" />
        </VerticalStackLayout.GestureRecognizers>

    private async void OnGesture(object sender, EventArgs e)
    {
        Navigation.InsertPageBefore(new SecondPage(), this);
        await Navigation.PopAsync(animated: false);
    }

Link to public reproduction project repository

https://github.com/konrad-gora/DoubleTapError

Version with bug

8.0.3

Is this a regression from previous behavior?

Yes, this used to work in .NET MAUI

Last version that worked well

Unknown/Other

Affected platforms

Android

Affected platform versions

Android 13 Samsung A52s

Did you find any workaround?

Adding Delay makes it work.

        await Navigation.PushAsync(new SecondPage(), animated: false);
        await Task.Delay(1);
        Navigation.RemovePage(this);

Also if I'm not removing this page from navigation, there is no error (but this is not an expected behavior).

Relevant log output

No response

[jsuarezruiz]

https://github.com/konrad-gora/DoubleTapError is not working, maybe is a private repo?, could you check it?

[konrad-gora]

https://github.com/konrad-gora/DoubleTapError is not working, maybe is a private repo?, could you check it?

You are right, I changed it to public.

We've added this issue to our backlog, and we will work to address it as time and resources allow. If you have any additional information or questions about this issue, please leave a comment. For additional info about issue management, please read our Triage Process.

[smhasan]

Any update !!!

[jsuarezruiz]

This issue will be fixed by #19517