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.

this.save();
    if (this.baseTransform) {
      this.ctx.setTransform.apply(this.ctx, this.baseTransform);
    }
  }
  endAnnotations() {
    this.restore();
  }
  beginAnnotation(id, rect, transform, matrix) {
    this.save();
    resetCtxToDefault(this.ctx);
    this.current = new CanvasExtraState();
    if (Array.isArray(rect) && rect.length === 4) {
      const width = rect[2] - rect[0];
      const height = rect[3] - rect[1];
      this.ctx.rect(rect[0], rect[1], width, height);
      this.clip();
      this.endPath();
    }
    this.transform.apply(this, transform);
    this.transform.apply(this, matrix);
  }
  endAnnotation() {
    this.restore();
  }
  paintImageMaskXObject(img) {