Feature not added to KML Vector Layer in Firefox

Question

UPDATE simplified with JSFiddle example: here is the most simplistic JSFiddle showing what I mean: http://jsfiddle.net/eflowbeach/75eq1mqe/

You can see in Chrome and IE that the feature appears, in Firefox nothing displays. The KML is valid.

Original Question: Has anyone else had a KML vector layer display perfectly fine in Chrome (v35) and IE10+, but fails to add the features to the layer in Firefox (v30)? I'm using OpenLayers 2.12 and have also tested in 2.13.1 without success.

var test = new OpenLayers.Layer.Vector("test",
  {
    projection : new OpenLayers.Projection("EPSG:4326"),
    strategies : [new OpenLayers.Strategy.Fixed()],
    protocol : new OpenLayers.Protocol.HTTP(
    {
      url : "myFile.kml",
      format : new OpenLayers.Format.KML(
      {
        extractStyles : true,
        extractAttributes : true 
      })
    })
  });
  me.map.addLayer(test);

When you look at the features of this layer in the console:

console.log(test[0].features);

Chrome and IE have 11 features in Firefox the feature array is empty.

Here's the link to the KML file in question: https://drive.google.com/file/d/0B_iQDBiLH9cfQWIzS3A4anZqcVk/edit?usp=sharing

I've had this happen to other files too, so I was wondering if it was something wrong with my format statement.

Answer 1

This might have to do with some browser security features in Firefox that block access to local files, that aren't present in chrome/IE. It might require using a proxy to make it look like it's from somewhere else, or a workaround to the local restriction. A few links below that might explain a bit better.

Blog post from a GIS developer who had a kml issue somewhat similar: http://reganbj.blogspot.ca/2009/10/mystery-solved.html

Summary of issue from Mozillazine, summarizing the basis for the problem: http://kb.mozillazine.org/Links_to_local_pages_do_not_work

Stack overflow questions relating to the issue (many other related Q's on overflow and superuser): https://stackoverflow.com/questions/192080/firefox-links-to-local-or-network-pages-do-not-work?rq=1 https://stackoverflow.com/questions/7331997/kml-layer-in-openlayers-doesnt-work-on-localhost?rq=1

Answer 2

Does it do this with all feature types or certain features? probins answer notes that in this bug lines work but points/icons aren't being displayed properly. Perhaps this can lead you in the right direction.