AutoMapper 5.1.1 and AutoMapper.Collection 2.1.0 issue

using AutoMapper;
using AutoMapper.EquivilencyExpression;
using AutoMapper.Mappers;
using System;
using System.Collections.Generic;
　
namespace ConsoleApplication1
{
    class Program
    {
        static void Main(string[] args)
        {
            Mapper.Initialize(x =>
            {
                // If you remove this line, mapping will be succesfull in both cases.
                x.AddProfile<CollectionProfile>();
                x.AddProfile<AwesomeProfile>();
            });
　
            var dtos = new List<ThingDto>()
            { 
                new ThingDto() { ID = 1, Title = "test0" },
                new ThingDto() { ID = 2, Title = "test2" } 
            };
　
            var items = new List<Thing>()
            { 
                new Thing() { ID = 1, Title = "test1" },
                new Thing() { ID = 3, Title = "test3" },
            };
　
            var result0 = CreateResultString(Mapper.Map<List<ThingDto>, List<Thing>>(dtos, items));
            var result1 = CreateResultString(Mapper.Map<List<Thing>>(dtos));
            Console.WriteLine(result0);
            Console.WriteLine(result1);
            Console.ReadLine();
            // AutoMapper 4.1.1 and AutoMapper.Collection 1.1.2 output:
            // test0 test2
            // test0 test2
            //
            // AutoMapper 5.1.1 and AutoMapper.Collection 2.1.0 output:
            // test0 test2
            // Things are null
        }
　
        static string CreateResultString(List<Thing> things)
        {
            return things != null ? string.Join(" ", things) : "Things are null";
        }
    }
　
    public class AwesomeProfile : Profile
    {
        protected override void Configure()
        {
            CreateMap<ThingDto, Thing>()
                .EqualityComparision((dto, entity) => dto.ID == entity.ID);
        }
    }
　
    public class Thing
    {
        public int ID { get; set; }
        public string Title { get; set; }
        public override string ToString() { return Title; }
    }
　
    public class ThingDto
    {
        public int ID { get; set; }
        public string Title { get; set; }
    }
}