mapserver - OL3 parser flips the coordinates

When requesting featureInfo from MapServer using getGetFeatureInfoUrl() of OL3 lib

var req_url = the_layer.getSource().getGetFeatureInfoUrl(
  evt.coordinate,
  map.getView().getResolution(),
  map.getView().getProjection(), //4326
  {

     'INFO_FORMAT': 'application/vnd.ogc.gml',
  }
);

it returns response in which the coordinates X and Y are in coorect order but after parsing the response theu are flipped:

$.ajax(req_url, {
            async: false
          })
          .done(function(resp){
            //console.log(resp);

            WMSfeatures = parser.readFeatures(resp);
            console.log(WMSfeatures);
           });

Coordinates in response from mapserver:

[[223.745,250.638],[232.028,255.22],[229.376,264.126]] (in EPSG:4326)

Parsed response:

[[250.638,223.745],[255.22,232.028],[264.126,229.376]] (in EPSG:4326)

What is wrong here?