CSS with a font defined by a data url causes IE 11 to crash.
The font.css contains 6 fonts using the src: url(data: encoding:
@font-face {font-family: 'fontName';
font-weight: normal;
font-style: normal;
src: url(data:font/opentype;charset=utf-8;base64,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)format('truetype');}