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.ctx.transform(a, b, c, d, e, f);
    this._cachedGetSinglePixelWidth = null;
  }
  
  constructPath(ops, args) {
    const ctx = this.ctx;
    const current = this.current;
    let x = current.x,
      y = current.y;
    for (let i = 0, j = 0, ii = ops.length; i < ii; i++) {
      switch (ops[i] | 0) {
        case OPS.rectangle:
          x = args[j++];
          y = args[j++];
          const width = args[j++];
          const height = args[j++];
          const xw = x + width;
          const yh = y + height;