Java SE (Java Platform, Standard Edition)

I noticed that the following visual renders correctly for Chrome/Firefox but not in WebView.  Here is the link:

radar chart with an interactive legend

I have tracked it down to a glow filter.  I am convinced that this is a webview bug, but wanted to discuss here first.

<g transform="translate(350,350)">

  <defs>

    <filter id="glow">

      <feGaussianBlur stdDeviation="2.5" result="coloredBlur"></feGaussianBlur>

      <feMerge>

        <feMergeNode in="coloredBlur"></feMergeNode>

        <feMergeNode in="SourceGraphic"></feMergeNode>

      </feMerge>

    </filter>

  </defs>

  <g class="axisWrapper">

    <circle class="gridCircle" r="250" style="fill: rgb(205, 205, 205); stroke: rgb(205, 205, 205); fill-opacity: 0.1; filter: url(#glow);"></circle>

    <circle class="gridCircle" r="200" style="fill: rgb(205, 205, 205); stroke: rgb(205, 205, 205); fill-opacity: 0.1; filter: url(#glow);"></circle>

    ....

</g>

</g>

Thanks,

- Pat