C# Metro HttpClient not receiving cookie on PostAsync
===

I am trying to log in to a website using .NET 4.5 HttpClient and receive a cookie. I break right before leaving the try and check the CookieContainer and it contains no cookies. The response sends back a 200 status though. 

    private async void Login(string username, string password)
    {
        try
        {
            Uri address = new Uri(@"http://website.com/login.php");
            CookieContainer cookieJar = new CookieContainer();
            HttpClientHandler handler = new HttpClientHandler()
            {
                CookieContainer = cookieJar
            };
            handler.UseCookies = true;
            handler.UseDefaultCredentials = false;
            HttpClient client = new HttpClient(handler as HttpMessageHandler)
            {
                BaseAddress = address
            };

            HttpContent content = new StringContent(string.Format("username={0}&password={1}&login=Login&keeplogged=1", username, password));
            HttpResponseMessage response = await client.PostAsync(client.BaseAddress, content);
        }

I have no clue why this isn't working. It works fine when I try .NET 4 style. 