Attach (recommended) or Link to PDF file here:

Configuration:
- Web browser and its version: Chrome 63.0.3239.132 
- Operating system and its version: Windows 10
- PDF.js version: using your official demo project
- Is a browser extension: No

Steps to reproduce the problem:
1.  Just load attached pdf
2.

What is the expected behavior? (add screenshot)
[E-WG18_105147.pdf](https://github.com/mozilla/pdf.js/files/1634833/E-WG18_105147.pdf)

What went wrong? (add screenshot)
![image](https://user-images.githubusercontent.com/29802177/34986271-3ca71a5c-fab7-11e7-95e8-1739dda3cd04.png)

Link to a viewer (if hosted on a site other than mozilla.github.io/pdf.js or as Firefox/Chrome extension):

if (ttContext.tooComplexToFollowFunctions) {
        return;
      }
      if (ttContext.functionsDefined.length > maxFunctionDefs) {
        warn("TT: more functions defined than expected");
        ttContext.hintsValid = false;
        return;
      }
      for (let j = 0, jj = ttContext.functionsUsed.length; j < jj; j++) {
        if (j > maxFunctionDefs) {
          warn("TT: invalid function id: " + j);
          ttContext.hintsValid = false;
          return;
        }
        if (ttContext.functionsUsed[j] && !ttContext.functionsDefined[j]) {
          warn("TT: undefined function: " + j);
          ttContext.hintsValid = false;
          return;
        }
      }
    }
    function foldTTTable(table, content) {