Clicking on basic Android notification causes white screen

[shasaur]

I've been struggling with this one for weeks, so any help would be much much appreciated.

Basically, in my Android app, I show a notification, and I want to bring the user back to the app when they click on it. At the moment, the user is successfully brought into the app but then the whole screen of the app shows as white (even before anything from the app is shown). However, code still seems to execute, so I guess something with the rendering is broken.

The surprising thing and perhaps an important hint is that after getting the notification, if I close the app, and then click on the notification, it works perfectly.

I'm running this on net8.0-android34.0 with Avalonia 11.1.3. I'm pretty sure this works in my older Avalonia project on net7.0-android with 11.0.2. If it helps, I'm also using Xamarin.AndroidX.Core.SplashScreen and Avalonia.ReactiveUI.

Here is some related code, I can post more if useful.

Scheduling

private int ScheduleNotification(DateTime dateTime)
{
    var intent = new Intent(this, typeof(AlarmReceiver));
    intent.AddFlags(ActivityFlags.SingleTop | ActivityFlags.ClearTask);
    var pendingIntent = PendingIntent.GetBroadcast(this, 1, intent, PendingIntentFlags.Immutable | PendingIntentFlags.UpdateCurrent);
    AlarmManager alarmManager = (AlarmManager)GetSystemService("alarm");
    long miliseconds = (long)(dateTime.ToUniversalTime() - new DateTime(1970, 1, 1)).TotalMilliseconds;

    alarmManager.Set(AlarmType.RtcWakeup, miliseconds, pendingIntent);
    return 0;
}

Receiving

[BroadcastReceiver(Enabled = true)]
public class AlarmReceiver : BroadcastReceiver
{
    public override void OnReceive(Context context, Intent intent)
    {
        var notificationManager = NotificationManagerCompat.From(context);
        Intent mainActivityIntent = new Intent(context, typeof(MainActivity));
        mainActivityIntent.AddFlags(ActivityFlags.SingleTop | ActivityFlags.ClearTask); 
        PendingIntent moveToApplication = PendingIntent.GetActivity(context, 1, mainActivityIntent, PendingIntentFlags.Mutable);
        var notificationBuilder = new NotificationCompat.Builder(context, "myNotification")
            .SetContentTitle("My title")
            .SetContentText("My description")
            .SetSmallIcon(Resource.Drawable.Icon)
            .SetAutoCancel(true)
            .SetContentIntent(moveToApplication);

        notificationManager.Notify(0, notificationBuilder.Build());
    }
}