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Custom properties are not logged using Application Insights

See original GitHub issue

Using the guidance from the Application Insights logging with .NET an Azure Function (net6.0 and FUNCTIONS_WORKER_RUNTIME of dotnet-isolated) does not log custom properties.

Steps to reproduce

The function trigger looks as follows:

using Microsoft.AspNetCore.Mvc;
using Microsoft.Azure.Functions.Worker;
using Microsoft.Azure.Functions.Worker.Http;
using Microsoft.Extensions.Logging;
using Performance.AuthTokenConfigGenerator.FunctionApp.Error_Responses;
using System;
using System.Collections.Generic;

namespace TokenGenerator.Function
{
    public class TokenGeneratorHttpTrigger
    {
        private readonly ILogger _logger;

        public TokenGeneratorHttpTrigger(ILogger<TokenGeneratorHttpTrigger> logger)
        {
            _logger = logger;
        }

        [Function(Constants.TokenGeneratorHttpTrigger)]
        public IActionResult Run([HttpTrigger(AuthorizationLevel.Function, "get",
            Route="TokenGeneratorHttpTrigger/{emailId}")] HttpRequestData req, string emailId, FunctionContext executionContext)
        {
            try
            {
                using (_logger.BeginScope(new Dictionary<string, object> { ["MyKey"] = "MyValue" }))
                {
                    _logger.LogError("An example of an Error level message");
                }

                return new OkObjectResult(emailId);
            }
            catch (Exception ex)
            {
                _logger.LogError(ex, "");

                return new InternalServerError(ex.Message);
            }
        }
    }
}

Expected results

I should see a custom property logged in application insights associated with the error message An example of an Error level message

Actual results

The custom properties section does not have the custom property I am trying to log:

Additional Information

csproj

<Project Sdk="Microsoft.NET.Sdk">
  <PropertyGroup>
    <TargetFramework>net6.0</TargetFramework>
    <AzureFunctionsVersion>v4</AzureFunctionsVersion>
    <OutputType>Exe</OutputType>
  </PropertyGroup>
  <ItemGroup>
    <PackageReference Include="Microsoft.AspNetCore.Mvc.Core" Version="2.2.5" />
    <PackageReference Include="Microsoft.Azure.Functions.Worker.Extensions.Http" Version="3.0.13" />
    <PackageReference Include="Microsoft.Azure.Functions.Worker.Sdk" Version="1.3.0" OutputItemType="Analyzer" />
    <PackageReference Include="Microsoft.Azure.Functions.Worker" Version="1.6.0" />
  </ItemGroup>
  <ItemGroup>
    <None Update="host.json">
      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
    </None>
    <None Update="local.settings.json">
      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
      <CopyToPublishDirectory>Never</CopyToPublishDirectory>
    </None>
  </ItemGroup>
</Project>

Program.cs

using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.Hosting;

namespace Performance.AuthTokenConfigGenerator.FunctionApp
{
    public static class Program
    {
        public static void Main(string[] args)
        {
            var host = new HostBuilder()
               .ConfigureFunctionsWorkerDefaults()
               .Build();

            host.Run();
        }
    }
}