efcore: Replacing a property with owned type doesn't work if there is owned types nesting in v2.1 RC1

I’m trying to use replacing properties with owned types since it was promised to fix in 2.1. This feature seems to be working ok with 1 level of owned types nesting. However, if you have 2 nested owned types, EF discards changes on the entity property. Its better to provide an example:

using Microsoft.EntityFrameworkCore;
using Microsoft.Extensions.DependencyInjection;

namespace TestEfCtorInjectionWithOwnedTypes
{
    public class MyEntity
    {
        public int Id { get; set; }
        public OwnedEntity Owned { get; set; }
        private MyEntity() { }
        public MyEntity(OwnedEntity owned) => Owned = owned;
    }

    public class OwnedEntity
    {
        public OwnedOwnedEntity OwnedOwnedProperty { get; private set; }
        private OwnedEntity() { }
        public OwnedEntity(OwnedOwnedEntity ownedOwnedProperty)
            => OwnedOwnedProperty = ownedOwnedProperty;
    }

    public class OwnedOwnedEntity
    {
        public double MyProperty { get; private set; }
        private OwnedOwnedEntity() { }
        public OwnedOwnedEntity(double myProperty) => MyProperty = myProperty;
    }

    class MyDbContext : DbContext
    {
        public MyDbContext(DbContextOptions options) : base(options) { }

        public DbSet<MyEntity> MyEntities { get; set; }

        protected override void OnModelCreating(ModelBuilder modelBuilder)
        {
            modelBuilder.Entity<MyEntity>(cb =>
            {
                cb.OwnsOne(seg => seg.Owned, b =>
                {
                    b.OwnsOne(e => e.OwnedOwnedProperty);
                });
            });
        }
    }

    class Program
    {
        static void Main(string[] args)
        {
            var services = new ServiceCollection();

            services.AddDbContext<MyDbContext>(options =>
                options.UseInMemoryDatabase("MyDatabase"));

            using (var sp = services.BuildServiceProvider())
            {
                int entityId;

                using (var scope = sp.CreateScope())
                {
                    var dbContext = scope.ServiceProvider.GetRequiredService<MyDbContext>();

                    var entity = new MyEntity(new OwnedEntity(new OwnedOwnedEntity(4242)));

                    dbContext.MyEntities.Add(entity);

                    dbContext.SaveChanges();

                    entityId = entity.Id;
                }

                using (var scope = sp.CreateScope())
                {
                    var dbContext = scope.ServiceProvider.GetRequiredService<MyDbContext>();

                    var entity = dbContext.MyEntities.Find(entityId);

                    System.Console.WriteLine("MyProperty before changing: " +
                        entity.Owned.OwnedOwnedProperty.MyProperty);

                    entity.Owned = new OwnedEntity(new OwnedOwnedEntity(4848));

                    System.Console.WriteLine("MyProperty before saving changes: " + 
                        entity.Owned.OwnedOwnedProperty.MyProperty);

                    dbContext.SaveChanges();

                    System.Console.WriteLine("MyProperty after saving changes: " +
                        entity.Owned.OwnedOwnedProperty.MyProperty);
                }
            }
        }
    }
}

The output I’m getting:

MyProperty before changing: 4242
MyProperty before saving changes: 4848
MyProperty after saving changes: 4242