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.

if (!this.contentVisible) {
      return;
    }
    this.save();
    const currentCtx = this.ctx;
    
    
    
    
    
    
    
    
    
    
    
    
    
    if (!group.isolated) {
      info("TODO: Support non-isolated groups.");
    }
    
    
    if (group.knockout) {
      warn("Knockout groups not supported.");
    }