WebView with Custom Renderer always shows up blank screen in Android Xamarin?

Question

I have a Custom Renderer to enable download and zoom options when a WebView is opened in Xamarin, but even seeting the Source with a URL parameter, the page shows empty screen. What to do?

My WebView.xaml:

<?xml version="1.0" encoding="utf-8" ?>
<ContentPage xmlns="http://xamarin.com/schemas/2014/forms"
             xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
             xmlns:loading="clr-namespace:MPS.Libertas.Mobile.Styles.Frames"
             xmlns:behaviors="clr-namespace:MPS.Libertas.Mobile.Behaviors"
             x:Class="MPS.Libertas.Mobile.Views.DetalhesDoProcesso.PecasPJe"
             Title="{Binding Title}">
    <StackLayout HorizontalOptions="FillAndExpand" VerticalOptions="FillAndExpand" BackgroundColor="#E6E8EA" AbsoluteLayout.LayoutFlags="All" AbsoluteLayout.LayoutBounds="0,0,1,1">
        <WebView x:Name="wvPecasPJe" VerticalOptions="FillAndExpand" HorizontalOptions="FillAndExpand" 
                Navigated="PagOnNavigated"
                Navigating="PagOnNavigating"
                 Source="{Binding Value, Mode=TwoWay}"
                   
                 />
    </StackLayout>
</ContentPage>

And code setting the Source value behind:

 private UrlWebViewSource _Value;
        public UrlWebViewSource Value
        {
            get { return _Value; }
            set
            {
                if (_Value != value)
                {
                    _Value = value;
                    OnPropertyChanged(new PropertyChangedEventArgs("Value"));
                }
            }
        }
 
public override async Task InitializeAsync(object navigationData)
        {
            IsRefreshing = true;
            try
            {
                if (navigationData is string linkPecasPJe)
                {
                    Value = new UrlWebViewSource
                    {
                        Url = $"{linkPecasPJe}"
                    };

                    Console.WriteLine(Value);
                                   
                }

                else
                {
                    throw new InvalidOperationException("Não foi possível recuperar o link das peças.");
                }

            }
            catch (Exception ex)
            {
                await DialogService.ShowError(ex, "Erro ao abrir as peças do PJe!", "Voltar", null);
                await NavigationService.NavigateToPrevious();
            }
            finally
            {
                IsRefreshing = false;
                await base.InitializeAsync(navigationData);
            }
        }

My CustomRenderer:

using Android.App;
using Android.Webkit;
using Xamarin.Forms.Platform.Android;
using Xamarin.Forms;
using Android.Content;
using Xamarin.Essentials;
using System.IO;
using System;
using MPS.Libertas.Mobile.Droid.Renderers;

[assembly: ExportRenderer(typeof(Xamarin.Forms.WebView), typeof(MyWebView))]
namespace MPS.Libertas.Mobile.Droid.Renderers
{
    internal class MyWebView : WebViewRenderer
    {
        public MyWebView(Context context) : base(context)
        {
        }
        protected override void OnElementChanged(ElementChangedEventArgs<Xamarin.Forms.WebView> e)
        {
            base.OnElementChanged(e);

            if (this.Control != null)
            {
                var webView = new global::Android.Webkit.WebView(this.Context);
                webView.SetWebViewClient(new WebViewClient());
                webView.SetWebChromeClient(new WebChromeClient());
                WebSettings webSettings = webView.Settings;
                webSettings.JavaScriptEnabled = true;
                webView.SetDownloadListener(new CustomDownloadListener());
                this.SetNativeControl(webView);
                var source = e.NewElement.Source as UrlWebViewSource;
                if (source != null)
                {
                    webView.LoadUrl(source.Url);
                }
            }

        }
    }
    public class CustomDownloadListener : Java.Lang.Object, IDownloadListener
    {
        public void OnDownloadStart(string url, string userAgent, string contentDisposition, string mimetype, long contentLength)
        {
            try
            {
                DownloadManager.Request request = new DownloadManager.Request(Android.Net.Uri.Parse(url));
                request.AllowScanningByMediaScanner();
                request.SetNotificationVisibility(DownloadVisibility.VisibleNotifyCompleted);
                // if this path is not create, we can create it.
                string thmblibrary = FileSystem.AppDataDirectory + "/download";
                if (!Directory.Exists(thmblibrary))
                    Directory.CreateDirectory(thmblibrary);
                request.SetDestinationInExternalFilesDir(Android.App.Application.Context, FileSystem.AppDataDirectory, "download");
                DownloadManager dm = (DownloadManager)Android.App.Application.Context.GetSystemService(Android.App.Application.DownloadService);
                dm.Enqueue(request);

            }
            catch (Exception)
            {
                throw;
            }

        }
    }
}

I noticed that, in the CustomRenderer, the source keeps loading with a null value. But the page should load even then because I am setting the source in the ViewModel, shouldnt it?