Exception data enricher for Serilog

Program.cs

using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Serilog;
using Serilog.Core;
using Serilog.Events;
using Serilog.Formatting.Json;
using Serilog.Sinks.IOFile;

namespace ExceptionDataEnrichment
{
    public class ExceptionDataEnricher : ILogEventEnricher
    {
        public void Enrich(LogEvent logEvent, ILogEventPropertyFactory propertyFactory)
        {
            if (logEvent.Exception == null ||
                logEvent.Exception.Data == null ||
                logEvent.Exception.Data.Count == 0) return;

            var dataDictionary = logEvent.Exception.Data
                .Cast<DictionaryEntry>()
                .Where(e => e.Key is string)
                .ToDictionary(e => (string)e.Key, e => e.Value);

            var property = propertyFactory.CreateProperty("ExceptionData", dataDictionary, destructureObjects: true);

            logEvent.AddPropertyIfAbsent(property);
        }
    }

    class Program
    {
        static void Main()
        {
            var log = new LoggerConfiguration()
                .Enrich.With<ExceptionDataEnricher>()
                .WriteTo.Sink(new FileSink("log.jsnl", new JsonFormatter(), null))
                .CreateLogger();

            try
            {
                var thrown = new InvalidOperationException("This is an error");
                thrown.Data["ExtraInfo"] = 123;
                throw thrown;
            }
            catch (Exception caught)
            {
                log.Error(caught, "Here's an error");
            }

            Console.WriteLine("Done!");
        }
    }
}

Works perfectly for me; could be an issue elsewhere in your setup?