MakeWebRequest returns -400 (invalid respone body data)

Hi, I'm playing around with makeWebRequest and cannot undrstan why I don't get this simple test code to work. The System gives back -400 (invalid response body data), regardless of what I put in as response type.

Here is the code: 

(:background)
class WebGetWFBackground extends Toybox.System.ServiceDelegate {

    function onTemporalEvent() {    
        webRequest();
    }           

    function onWebRequestComplete(responseCode, responseData) {
        Background.exit(responseCode);
    } 
    
    function webRequest() {
        
        var url = "https://www.garmin.com/sv-SE/";

		var options = { 
			:method => Comms.HTTP_REQUEST_METHOD_GET,
			:headers => {},
            :responseType => Comms.HTTP_RESPONSE_CONTENT_TYPE_TEXT_PLAIN	
        };		
    
        var responseCallback = method(:onWebRequestComplete); 

    	Comms.makeWebRequest(url, {}, options, responseCallback);

    }

According to the HTTP log in the simulator, the response I get is Text/HTML. It looks like it's a chunked reponse. (reponse start with "1cfea\r\n"). Can CIQ not process chunked responses?  

here's a screnshot on the HTTP traffic log: