Message missing in PreRestart?

gistfile1.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Akka.Actor;
using Akka.Routing;
using AkkaLab.Messages;

namespace AkkaLab.Publisher {
    class Program {
        static void Main(string[] args) {
            using(var system = ActorSystem.Create("my-system")) {
                var props = Props.Create<SubscriberActor>().WithRouter(new Akka.Routing.ConsistentHashingPool(5));
                var subscribers = system.ActorOf(props, "subscribers");

                Console.WriteLine("Enter a number please...");
                while(true) {
                    int id = 0;
                    var text = Console.ReadLine();
                    if(String.Equals(text, "quit", StringComparison.CurrentCultureIgnoreCase)) {
                        return;
                    } else if(Int32.TryParse(text, out id)) {
                        var payload = new PayLoad() {Id = id, Content = text};
                        var msg = new ConsistentHashableEnvelope(payload, payload.Id);
                        subscribers.Tell(msg);
                    } else {
                        var payload = new PayLoad() { Id = -1, Content = text };
                        var msg = new ConsistentHashableEnvelope(payload, payload.Id);
                        subscribers.Tell(msg);
                    }
                }
            }
        }
    }

    public class SubscriberActor : UntypedActor {
        private Guid Guid { get; set; }

        public SubscriberActor() {
            this.Guid = Guid.NewGuid();
        }

        protected override void OnReceive(object message) {
            if(message is PayLoad) {
                var payload = message as PayLoad;
                Console.WriteLine("({2}) Received content: {0} with Id: {1}", payload.Content, payload.Id, this.Guid.ToString());
                if(payload.Id < 0)
                    throw new Exception("Boom!");
            } else {
                Console.WriteLine("Received unknown message");
            }
        }

        protected override void PreRestart(Exception reason, object message) {
            base.PreRestart(reason, message);
        }
    }
}