Accessing winform control with System.Threading.Task gets stuck

The new Task class works great in WPF. However in Winforms, it is always stuck every time it tries to access a Winform control. The "InvokeRequired" routine below that has been working with BackgroundWorker and Thread classes that prevents cross-thread operation error. However, for some reason when it comes to Task, it gets stuck on the Invoke method. Help ?

Here is a sample code. I use NET 4.5.1 framework.

using System;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace WinformTaskDemo
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            string now = DateTime.Now.ToString();
            Task t = new Task(() => { setText(now); });
            t.Start();
            t.Wait();
        }

        private void setText(string text)
        {
            if (textBox1.InvokeRequired)
            {
                textBox1.Invoke(new Action(() => textBox1.Text = text)); //stuck forever here
            }
            else
            {
                textBox1.Text = text;
            }
        }
    }
}