I was thrilled to use Dynamic Root in Umbraco 13 to solve one of my issues about ordering data in a multi-tree picker, but, so disappointed now! My code is:

 public class DynamicArticlesOrderQueryStep : IDynamicRootQueryStep
 {
     private readonly IContentService _contentService;

     public DynamicArticlesOrderQueryStep(IContentService contentService)
     {
         _contentService = contentService;
     }

     public async Task<Attempt<ICollection<Guid>>> ExecuteAsync(ICollection<Guid> origins, DynamicRootQueryStep filter)
     {
         await Task.CompletedTask;

         if (filter.Alias != "OrderArticleByDate")
             return Attempt<ICollection<Guid>>.Fail();

         if (origins.Any() is false)
             return Attempt<ICollection<Guid>>.Succeed(Array.Empty<Guid>());

         var contentItems = _contentService.GetByIds(origins);

         if (contentItems.Any() is false)
             return Attempt<ICollection<Guid>>.Fail();

         var articles =
             _contentService
             .GetPagedChildren(contentItems.FirstOrDefault().Id, 0, 10, out long totalRecords, null, Ordering.By("UpdateDate", Direction.Descending));

         if (articles.Any())
             return Attempt<ICollection<Guid>>.Succeed(articles.Select(x => x.Key).ToList());


         return Attempt<ICollection<Guid>>.Succeed(Array.Empty<Guid>());
     }
 }

my picker setting: I have no result coming back in the picker, and there is no error in the console or anywhere, when I debug I can see 10 Guids which are correct answers but nothing in back office coming back, did I miss a step? (I did register it by the composer)

I am using Umbraco version 13.2.2.