C# Bug

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading;

namespace CSharpBug
{
  class Program
  {
    static void Main(string[] args)
    {
      /*
       Expected Output:
        Test *.log
        Test *.log
        Test *.log
        Test *.log
        Done
       
       Actual Output:
        Test
        Test *.log
        Test *.log
        Test *.log
        Done
      */
      try
      {
        string fileMask = "*.log";
        Console.WriteLine("Test", fileMask); // bug! fileMask will NOT be shown
        
        Console.WriteLine(String.Format("Test {0}", fileMask));
        
        Console.WriteLine(String.Format(Thread.CurrentThread.CurrentCulture, "Test {0}", fileMask));
        
        object[] objArray = new object[] { fileMask };
        Console.WriteLine(String.Format(Thread.CurrentThread.CurrentCulture, "Test {0}", objArray));
      }
      catch (Exception e)
      {
        Console.WriteLine(e.Message);
      }
      Console.WriteLine("Done");
      Console.ReadKey();
    }
  }
}