Neo4jClient deadlock

DeadlockDemo.cs

using Neo4jClient;
using Nito.AsyncEx;
using System;
using System.Threading.Tasks;

namespace DeadlockDemo
{
    class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine("Starting the program");
            var program = new Program();
            AsyncContext.Run(() => program.MainThreadAsync());
            Console.WriteLine("Finished the program");
        }

        private async Task MainThreadAsync() {
            Console.WriteLine("Creating the GraphClient");
            var graphClient = new GraphClient(new Uri("http://localhost:7474/db/data"));
            Console.WriteLine("Connecting to Neo4j");
            graphClient.Connect();
            Console.WriteLine("Connected to Neo4j");
            await addReviewNode(graphClient);
        }

        private async Task addReviewNode(GraphClient graphClient)
        {
            ReviewNode reviewNode = new ReviewNode
            {
                Id = "1",
                Status = "active"
            };

            var reviewId = "1";

            Console.WriteLine("First call...");

            graphClient.Cypher
                .Merge("(review:Review {Id: {reviewIdParam}})")
                .OnCreate()
                .Set("review = {reviewParam}")
                .WithParams(new { reviewIdParam = reviewId, reviewParam = reviewNode })
                .ExecuteWithoutResults();

            Console.WriteLine("First done");

            graphClient.Cypher
                .Merge("(review:Review {Id: {reviewIdParam}})")
                .OnCreate()
                .Set("review = {reviewParam}")
                .WithParams(new { reviewIdParam = reviewId, reviewParam = reviewNode })
                .ExecuteWithoutResults();

            Console.WriteLine("Here");
            Console.ReadKey();
        }
    }
}