Property of type Enum List fails to Map/Convert

[mreyeros]

The following simple model fails to map when querying with the Azure Cosmos Db provider:

public class FulfillmentOptionConfig {
        public string Id { get; set; }
        public FulfillmentOption FulfillmentOption { get; set; }
        public List<Peril> AllowedPerils { get; set; } = new List<Peril>();
        public string DocumentType { get; set; } = Constants.DocumentTypes.FulfillmentOptionConfig;
    }

I have attempted to convert the property using a ValueConverter but the following error is encountered:

Error: System.ArgumentException: Can not convert Array to String.
at Newtonsoft.Json.Linq.JToken.op_Explicit(JToken value)
at Newtonsoft.Json.Linq.JToken.ToObject(Type objectType)
at Newtonsoft.Json.Linq.JToken.ToObjectT
at lambda_method(Closure , QueryContext , JObject )
at Microsoft.EntityFrameworkCore.Cosmos.Query.Internal.CosmosShapedQueryCompilingExpressionVisitor.AsyncQueryingEnumerable1.AsyncEnumerator.MoveNextAsync() at Microsoft.EntityFrameworkCore.EntityFrameworkQueryableExtensions.ToListAsync[TSource](IQueryable1 source, CancellationToken cancellationToken)
at Microsoft.EntityFrameworkCore.EntityFrameworkQueryableExtensions.ToListAsync[TSource](IQueryable1 source, CancellationToken cancellationToken) at DF.ConfigManager.Features.Configuration.FulfillmentOptions.IndexMediator.QueryHandler.Handle(Query request, CancellationToken cancellationToken) in C:\dev\DF.ConfigManager\src\DF.ConfigManager\Features\Configuration\FulfillmentOptions\IndexMediator.cs:line 27 at MediatR.Pipeline.RequestPostProcessorBehavior2.Handle(TRequest request, CancellationToken cancellationToken, RequestHandlerDelegate1 next) at MediatR.Pipeline.RequestPreProcessorBehavior2.Handle(TRequest request, CancellationToken cancellationToken, RequestHandlerDelegate`1 next)
at DF.ConfigManager.Features.Configuration.FulfillmentOptions.IndexBase.OnInitializedAsync() in C:\dev\DF.ConfigManager\src\DF.ConfigManager\Features\Configuration\FulfillmentOptions\Index.razor.cs:line 18
at Microsoft.AspNetCore.Components.ComponentBase.RunInitAndSetParametersAsync()
at Microsoft.AspNetCore.Components.RenderTree.Renderer.GetErrorHandledTask(Task taskToHandle)

If the property is ignored, the model is returned successfully. I have another property, FulfillmentOption, which is of type enum and is setup to use the EnumToStringConverter and that is working without issue.

EF Core version: 3.0.0
Database provider: Microsoft.EntityFrameworkCore.Cosmos
Target framework: .NET Core 3.0
Operating system: Windows 10
IDE: Visual Studio 2019 16.3

[AndriySvyryd]

Duplicate of #14762

[ggirard07]

This issue has been closed as duplicate of #14762, but that one address primitive types like string or int but does not seem to support enum.
@AndriySvyryd is it possible to reopen?

[AndriySvyryd]

The new duplicate is #25343