Triggers AutoMapper threading issue

gistfile1.txt

using System;
using System.Linq;
using System.Threading.Tasks;
using AutoMapper;

namespace ConsoleApplication39
{
  internal class Program
  {
    private static void Main (string[] args)
    {
      var tasks = Enumerable.Range(0, 5).Select(
          i =>
              Task.Factory.StartNew(
                  () =>
                  {
                    Mapper.DynamicMap<SomeDtoA, SomeDtoB>(new SomeDtoA());
                    Mapper.DynamicMap<SomeDtoB, SomeDtoA>(new SomeDtoB());
                    Mapper.DynamicMap<SomeDtoC, SomeDtoD>(new SomeDtoC());
                    Mapper.DynamicMap<SomeDtoD, SomeDtoC>(new SomeDtoD());
                  }))
          .ToArray();
      Task.WaitAll(tasks);
    }
  }
}

internal class SomeDtoA
{
  private string Property1 { get; set; }
  private string Property21 { get; set; }
  private string Property3 { get; set; }
  private string Property4 { get; set; }
  private string Property5 { get; set; }
  private string Property6 { get; set; }
  private string Property7 { get; set; }
  private string Property8 { get; set; }
  private string Property9 { get; set; }
  private string Property10 { get; set; }
  private string Property11 { get; set; }
}

internal class SomeDtoB
{
  private string Property1 { get; set; }
  private string Property21 { get; set; }
  private string Property3 { get; set; }
  private string Property4 { get; set; }
  private string Property5 { get; set; }
  private string Property6 { get; set; }
  private string Property7 { get; set; }
  private string Property8 { get; set; }
  private string Property9 { get; set; }
  private string Property10 { get; set; }
  private string Property11 { get; set; }
}

internal class SomeDtoC
{
  private string Property1 { get; set; }
  private string Property21 { get; set; }
  private string Property3 { get; set; }
  private string Property4 { get; set; }
  private string Property5 { get; set; }
  private string Property6 { get; set; }
  private string Property7 { get; set; }
  private string Property8 { get; set; }
  private string Property9 { get; set; }
  private string Property10 { get; set; }
  private string Property11 { get; set; }
}

internal class SomeDtoD
{
  private string Property1 { get; set; }
  private string Property21 { get; set; }
  private string Property3 { get; set; }
  private string Property4 { get; set; }
  private string Property5 { get; set; }
  private string Property6 { get; set; }
  private string Property7 { get; set; }
  private string Property8 { get; set; }
  private string Property9 { get; set; }
  private string Property10 { get; set; }
  private string Property11 { get; set; }
}