JsonStringEnumMemberConverterOptionsAttribute & custom naming policy is not working together

[ShirlyAr]

Hi,
I've tried the combination of

`[JsonStringEnumMemberConverterOptions(deserializationFailureFallbackValue: MyEnum.Unknown)]
[JsonConverter(typeof(JsonStringEnumMemberConverter))]
public enum MyEnum
{
Unknown = 0,

[EnumMember(Value = "value1")]
ValidValue = 1

}`
When I use the following custom policy name :

public void ConfigureServices(IServiceCollection services) { services.AddControllers() .AddJsonOptions(options => { options.JsonSerializerOptions.Converters.Add(new JsonStringEnumMemberConverter(new UpperSnakeCaseNamingPolicy(), false)); options.JsonSerializerOptions.WriteIndented = true; });

Issues observed:

1. once the fallback attribute is added converter is not working on serialize/deserialize
2. fallback value is not being handled

Am I missing something in my implementation?