Swashbuckle / Swagger missing enum information when enum is in path

Question

I have a C# .Net 6 API using Swashbuckle to generate Swagger docs for clients.

I have Swashbuckle.AspNetCore 6.3.1 and *.Filters 7.02 installed.

In Startup.cs, I have

...
    swaggerOptions.UseInlineDefinitionsForEnums();
    swaggerOptions.SchemaFilter<EnumDescriptionFilter>(); // Custom filter.
...

.AddJsonOptions(options =>
    {
        options.JsonSerializerOptions.DefaultIgnoreCondition = JsonIgnoreCondition.WhenWritingNull;
        options.JsonSerializerOptions.Converters.Add(new JsonStringEnumConverter());
    })

I have several enums in the APIs that are string serialized. This works great when the enum is in the query string:

However, this doesn't work when the enum is in the path:

I've tried fiddling with the configuration, experimenting with the Annotations package, switching to Newtonsoft, etc. but have had no such luck.

If I change the type of the parameter to string then I get a type of string in the swagger, but I don't get the possible values.

Any idea what I'm missing?

Thanks.

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Update. Upon further playing around, in the querystring only List show up correctly. If I add [FromQuery] VehicleType vehicleType to a route, then it shows up without a type.

At the same time, [FromQuery] List<VehicleType> vehicleTypes shows up correctly.

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Updated 2: Looks like this is an issue with OpenAPI.NET https://github.com/domaindrivendev/Swashbuckle.AspNetCore/issues/1329#:~:text=Enum%20type%20is%20missing%20%28look%20at%20JustEnum%20in,and%20serialization%20to%20JSON%20behavior%20from%20that%20library.

As per the thread, this is a work around for the bug:

swaggerGenOptions.UseInlineDefinitionsForEnums();