The SVG use tag not rendering gradients Firefox

Question

I have a javascript app (CAD like) build in SVG that have tools (objects build in SVG with Inkscape) that are inserted with the use tag. Everything works fine on Chrome and Safari (never tested in IE), but in Firefox, all objects that fill with gradients did not render. Like image below:

Firefox

Chrome

The tools are loaded like this (using external files)

<use 
  id="SvgjsUse1448" 
  xmlns:xlink="http://www.w3.org/1999/xlink" 
  xlink:href="assets/images/neomap/tools/armchair.svg#armchair">
</use>

The gradients are defined in a separate svg inside the html page

...
<linearGradient xmlns="http://www.w3.org/2000/svg" id="armchair_SVGID_1_" y2="1911.6" gradientUnits="userSpaceOnUse" x2="1201.2" gradientTransform="matrix(1.0799475,0,0,1.2039969,15.269894,2.997636)" y1="467.91" x1="1201.7">

and apply like this

<svg xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:dc="http://purl.org/dc/elements/1.1/" height="100%" width="100%" version="1.1" >
  <defs>
    <symbol id="armchair" viewBox="0 0 72000 54000">

       <path style="stroke:#000000;stroke-width:6.84171867;stroke-miterlimit:10;fill:url(#armchair_SVGID_1_);" d="m2234.8,743.7s168.9,1406.4,0,1487.4c-188.77,90.42-1655.6,92.708-1844.3-0.4817-168.8-83.316,0-1488.9,0-1488.9v-182.09h1841l3.2398,184.09z"/>
       ...
    </symbol>
  </defs>
</svg>

It's a bug on Firefox? How can I workaround?

Answer 1

I had a similar problem and it turned out that mine was a real edge case, so I'm posting my solution here for the benefit of others.

My goal was to define a set of icons for later reuse in the document. I had defined the icons as nested svg documents inside a defs element:

<svg id="icons">
  <defs>

    <g id="atom-icon">
      <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 256 256">
        <defs>
          <linearGradient id="atom-41-a" x1="50%" x2="50%" y1="3.961%" y2="100%">
            <stop offset="0%" stop-color="#FDFDFD"/>
            <stop offset="100%" stop-color="#CBCBCB"/>
          </linearGradient>
          <linearGradient id="atom-41-b" x1="50%" x2="50%" y1="3.961%" y2="100%">
            <stop offset="0%" stop-color="#B2E198"/>
            <stop offset="100%" stop-color="#04A171"/>
          </linearGradient>
        </defs>
        <g fill="none">
          <circle cx="128" cy="128" r="127.858" fill="url(#atom-41-a)"/>
          <circle cx="127.858" cy="128.142" r="116.907" fill="url(#atom-41-b)"/>
          <path fill="#F2F8F6" d="M100.453 110.097a221.783 221.783 0 0 0-3.988 6.382 164.44 164.44 0 0 1-3.684-11.377c3.73-.535 7.695-.957 11.874-1.249a224.886 224.886 0 0 0-4.202 6.244zm103.138 7.475c-4.132-3.967-10.04-7.602-17.558-10.804-14.926-6.356-34.918-10.474-56.295-11.595a234.82 234.82 0 0 0-7.529-.277C138.53 75.415 154.292 65.05 163.472 64.7c1.944-.074 3.576.31 4.854 1.141 4.296 2.792 5.488 11.453 3.189 23.166a4.267 4.267 0 0 0 8.373 1.644c3.953-20.137-1.576-28.497-6.911-31.965-2.785-1.81-6.093-2.655-9.83-2.513-14.12.536-33.904 15.592-51.956 38.803-7.148.247-14.038.864-20.483 1.827a106.106 106.106 0 0 1-1.625-9.522c-1.619-13.344.367-22.816 5.312-25.337.794-.405 1.662-.639 2.654-.713 4.418-.332 10.652 2.637 17.542 8.359a4.267 4.267 0 0 0 5.452-6.565c-8.85-7.35-16.8-10.817-23.633-10.303-2.112.158-4.095.703-5.892 1.62-4.593 2.342-7.732 6.828-9.33 13.331-1.368 5.57-1.562 12.513-.576 20.636.39 3.213.96 6.556 1.695 9.998-5.04 1.062-9.71 2.356-13.897 3.869-18.316 6.616-22.544 15.337-22.866 21.488-.308 5.876 2.7 14.62 18.775 22.91a4.267 4.267 0 0 0 3.911-7.583c-9.247-4.77-14.41-10.193-14.165-14.88.346-6.605 11.417-13.596 30.274-17.535 1.747 6.309 3.99 12.861 6.68 19.505-6.777 12.723-11.722 25.262-14.286 36.416-1.833 7.97-2.369 14.89-1.592 20.567.906 6.63 3.558 11.418 7.881 14.228 2.205 1.433 5.176 2.553 9.079 2.553 5.658 0 13.275-2.357 23.343-9.538a4.267 4.267 0 1 0-4.955-6.948c-9.925 7.08-18.454 9.613-22.816 6.778-4.652-3.023-5.633-12.642-2.624-25.728 1.995-8.678 5.555-18.296 10.383-28.21a220.995 220.995 0 0 0 3.283 6.731c9.717 19.087 21.612 35.694 33.494 46.762 5.984 5.573 11.708 9.497 17.011 11.663 3.218 1.314 6.24 1.971 9.045 1.971 2.596 0 5.008-.563 7.216-1.69 4.43-2.259 7.511-6.52 9.157-12.665 1.41-5.263 1.726-11.827.942-19.512-1.543-15.11-7.253-33.539-16.077-51.891a4.267 4.267 0 0 0-7.69 3.697c8.407 17.485 13.833 34.908 15.278 49.06 1.27 12.447-.78 21.31-5.486 23.71-4.942 2.52-13.756-1.438-23.58-10.588-11.17-10.404-22.43-26.168-31.706-44.388a210.555 210.555 0 0 1-5.851-12.483 210.936 210.936 0 0 1 7.143-11.836 213.301 213.301 0 0 1 7.877-11.333c.7-.01 1.405-.017 2.115-.019 3.664-.012 7.592.09 11.688.305 20.404 1.07 39.368 4.95 53.399 10.925 12.34 5.256 19.534 11.704 19.244 17.25-.246 4.708-5.967 9.575-15.696 13.352a4.267 4.267 0 0 0 3.088 7.955c16.905-6.563 20.821-14.967 21.13-20.861.27-5.151-2.04-10.111-6.865-14.743v.001z"/>
          <path fill="#F1F8F3" d="M119.194 129.133c0 5.153 4.174 9.33 9.323 9.33s9.323-4.177 9.323-9.33c0-5.154-4.174-9.331-9.323-9.331s-9.323 4.177-9.323 9.33"/>
        </g>
      </svg>
    </g>

  </defs>
</svg>

Which I used elsewhere in the document like so:

<li title="Atom">
  <svg><use xlink:href="#atom-icon"/></svg>
</li>

In order to prevent the big list of icons references from rendering on screen, I had applied the following styles:

#icons {
  display: none;
}

This caused, of all things, the url references to linearGradients to stop working. Probably the browsers removed them from the DOM tree because of display: none or some such effect.

The solution was the change the styles:

#icons {
  height: 0;
}