Creating a deadlock example C# Exam 70-483: error?

Question

I have the book Exam Ref 70-483 Programming in C#.

Listing 1-37(Page 33) shows an example of a deadlock.

    public class Program
    {
        static void Main(string[] args)
        {
            object lockA = new object();
            object lockB = new object();
            var up = Task.Run(() =>
            {
                lock (lockA)
                {
                    Thread.Sleep(1000);
                    lock (lockB)
                    {
                        Console.WriteLine("Locked A and B");
                    }
                }
            });
            lock (lockB)
            {
                lock (lockA)
                {
                    Console.WriteLine("Locked B and A");
                }
            }
            up.Wait();
        }
    }

In the paragraph, it says: Because both locks are taken in reverse order, a deadlock occurs. The first Task locks A and waits for B to become free. The main thread, however, has B locked and is waiting for A to be released.

However I tried the code, there was no deadlock at all.

Anything wrong?