Openlayers 3: Why forEachFeatureAtPixel only return one feature - openlayers-3

Question

I create a text box where I can put the coordinates X,Y then I move the pin to the location and find which roads are there.
The pin move, but forEachFeatureAtPixel only return one feature instead of four. Also the feature I got doesn't have NOMBRE property
I'm using Openlayer 3 and my WMS server map.
As you can see in MapInfo (picture right side) I got all 4 features. Horizontal 2x "Calle 6" and Vertical 2x "Calle 1 Norte", and have NOMBRE property.
I'm using the same x, y from mapinfo where all 4 feature instersect.
new info: My layer is ol.layer.Tile instead of ol.layer.Vector, maybe that is the problem (checking)
wmsLyr09 = new ol.layer.Tile({
source: wmsSource
});
// move the pin to new position
geometry.translate(deltaX, deltaY);
var coordinate = geometry.getCoordinates();
var pixel = map.getPixelFromCoordinate(coordinate);
console.log('pixel: ' + pixel);
var allFeaturesAtPixel = [];
map.forEachFeatureAtPixel(pixel, function (feature) {
allFeaturesAtPixel.push(feature);
});
// feature[len]:1
console.log("feature[len]:" + allFeaturesAtPixel.length);
//feature[Name]: undefined
feature= allFeaturesAtPixel[0];
console.log("feature[Name]: " + feature.get('NOMBRE'));

Answer 1

In your map you probably have two layers, the WMS tile layer and the vector layer for the pin. So, OpenLayers doesn't know about the road features. If you are calling forEachFeatureAtPixel you are getting the only feature OpenLayers knows about: the pin.
What you want to do is make a WFS GetFeature request to get the features at the current pin position. Take a look at this example: http://openlayers.org/en/master/examples/getfeatureinfo-tile.html