IE10 crashes with framesets and svg background-image in an external CSS

• A frameset contains two frames
• The first frame is a blank one (just to see that it's a frameset)
• The second frame contains a header <h1>, a link <a> and references an external CSS <link>
• The CSS contains a single rule for the h1 with a background image referencing an SVG file (external or as inline data)
• The <a> can reference any page, but targets the main document (either _parent or _top)

When you click on the link in the second frame, IE10 crashes.

Code :

Frameset: index.html

<frameset rows="60,*">    <frame />    <frame src="a.html"/></frameset>

Second frame: a.html

<link rel="stylesheet" type="text/css"  href="main.css"/><h1>Title</h1><a href="a.html" target="_top">this page on top</a>

main.css

h1 {    background: 
url("data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjxyZWN0IGhlaWdodD0iMTAiIHdpZHRoPSIzMCIgc3Ryb2tlPSIjMDAwIiBmaWxsPSIjRjAwIi8+PC9zdmc+Cg==");
}

The SVG data (not needed, for information only) :

<svg xmlns="http://www.w3.org/2000/svg">    <rect height="10" width="30" stroke="#000" fill="#F00"/></svg>