We have a weird issue with formatting of ContentApiModel to JSON.

// Startup.cs
services.UseNewtonsoftSerialization(assembly, settings =>
{
	settings.Converters.Add(new StringEnumConverter(new DefaultNamingStrategy()));
	settings.ContractResolver = new CamelCasePropertyNamesContractResolver();
	settings.StringEscapeHandling = StringEscapeHandling.EscapeHtml;
	settings.ReferenceLoopHandling = ReferenceLoopHandling.Ignore;
});
...
services.AddCms();
...

// api controller, _contentApiOptions is injected in constructor

[HttpGet]
[Route("{contentLinkId:int?}")]
public IActionResult GetAll([FromRoute] int? contentLinkId = null)
{
	var content = new List<ContentApiModel>();
	var language = LanguageSelector.AutoDetect(true).Language;
	foreach (var page in GetAllResellers(contentLinkId))
	{
		var model = _contentConverter.Convert(page, new ConverterContext(page.ContentLink, language, _contentApiOptions, 
			ContextMode.Default, null, "*", false));
		content.Add(model);
	}

	return new JsonFormattedResult(content);
}

Resulting JSON, some properties are propper CamelCase - some are not.

Any ideas?