PDFs from lumileds.com do not load with PDF.js. Part of the background loads, then only the spinner continues while using 100% CPU. 

An example pdf is http://www.lumileds.com/uploads/17/DS61-pdf 

This behaviour occurs with both the release version of pdf.js in firefox 41.0.2 and the latest .xpi downloaded from this github page.

const charSpacing = current.charSpacing;
    const wordSpacing = current.wordSpacing;
    const fontDirection = current.fontDirection;
    const textHScale = current.textHScale * fontDirection;
    const glyphsLength = glyphs.length;
    const vertical = font.vertical;
    const spacingDir = vertical ? 1 : -1;
    const defaultVMetrics = font.defaultVMetrics;
    const widthAdvanceScale = fontSize * current.fontMatrix[0];
    const simpleFillText =
      current.textRenderingMode === TextRenderingMode.FILL &&
      !font.disableFontFace &&
      !current.patternFill;
    ctx.save();
    let patternTransform;
    if (current.patternFill) {
      
      
      ctx.save();
      const pattern = current.fillColor.getPattern(
        ctx,
        this,
        ctx.mozCurrentTransformInverse
      );
      patternTransform = ctx.mozCurrentTransform;
      ctx.restore();
      ctx.fillStyle = pattern;
    }
    ctx.transform.apply(ctx, current.textMatrix);
    ctx.translate(current.x, current.y + current.textRise);