AsyncWaitHandle.WaitOne always times out

[kjeremy]

IAsyncResume.AsyncWaitHandle.WaitOne always returns false from a Wait.

IAsyncResult ar = _client.BeginConnect(address, port, result => { }, null);
if (!ar.AsyncWaitHandle.WaitOne(TimeSpan.FromSeconds(10)))
{
    // On windows phone we'll always get here.
}