White screen in transition between activities

I have a project in which I developed a method to save a reference of the current activity and when I used the HOME of the next screen, it returned to activity using that saved reference.

But when I press it back, the screen goes completely white and immediately follows the desired flow. This problem only occurs in 8.0+ android versions.

Here is the OnOptionsItemsSelected created:

case Android.Resource.Id.Home:
                DroidApplication.current.navigation.StartActivity(ownerActivity, DroidApplication.current.CurrentTypeActivity);
                return true;

                default:
                return base.OnOptionsItemSelected(item);

Follow StartActivity :

 public void StartActivity(Activity activity, Type activityDestino, Dictionary<string, object> prefs)
    {
        StartActivity(activity, new Intent(activity, activityDestino), prefs);
    }

    public void StartActivity(Activity activity, Type activityDestino)
    {
        StartActivity(activity, new Intent(activity, activityDestino), null);
    }

    public void StartActivity(Activity activity, Intent intent, Dictionary<string, object> prefs)
    {
        int animationIn = Resource.Animation.fade_in;
        int animationOut = Resource.Animation.fade_out;

        StartActivity( activity, intent, animationIn, animationOut, prefs);
    }

    public void StartActivity(Activity activity, Intent intent, int animationIn, int animationOut, Dictionary<string, object> prefs)
    {
        SavePreferences(activity, prefs);
        intent.AddFlags(ActivityFlags.NoAnimation);
        intent.AddFlags(ActivityFlags.NewTask | ActivityFlags.ClearTop);
        activity.StartActivity(intent);
        //activity.OverridePendingTransition(animationIn, animationOut);
    }

When I starto a activity , no problem occurs and I use the same method:

Example:

else if (codigoAcao == CODIGO_ACAO_ACTIVITY_MAIN)
        {
            DroidApplication.retornarInicial = false;
            StartActivity(activity, typeof(MainActivity));
        }