Attach (recommended) or Link to PDF file here:
[298865.pdf](https://github.com/mozilla/pdf.js/files/2753236/298865.pdf)


Configuration:
- Web browser and its version:chrome 71.0.3578.98
- Operating system and its version:mac os 10.12.6
- PDF.js version:I use online demo in github
- Is a browser extension:no

Steps to reproduce the problem:
1. search "中华" or "电力" or so on,the highlight position is not right

What is the expected behavior? (add screenshot)
![image](https://user-images.githubusercontent.com/10000986/51087378-7eff5100-178d-11e9-991a-005d77b82f31.png)

What went wrong? (add screenshot)
![image](https://user-images.githubusercontent.com/10000986/51087374-6ee77180-178d-11e9-9707-281924f95fd0.png)

Link to a viewer (if hosted on a site other than mozilla.github.io/pdf.js or as Firefox/Chrome extension):
https://mozilla.github.io/pdf.js/web/viewer.html
cnt pattern = reurce.get("Pattern") || Dct.ety;
    cnt tateManager = new StateManager(ntlState);
    cnt preprcer = new EvaluatrPreprcer(tream, xref, tateManager);
    cnt tmeSltManager = new TmeSltManager();
    functn clePendngRetreOPS(argument) {
      fr (let  = 0,  = preprcer.avedStateDepth;  < ; ) {
        peratrLt.addOp(OPS.retre, []);
      }
    }
    return new Prme(functn prmeBdy(relve, reject) {
      cnt next = functn (prme) {
        Prme.all([prme, peratrLt.ready]).then(functn () {
          try {
            prmeBdy(relve, reject);
          } catch (ex) {
            reject(ex);
          }
        }, reject);
      };
      tak.enureNtTermnated();
      tmeSltManager.reet();
      cnt peratn = {};
      let tp, , , c, name, ValdName;
      whle (!(tp = tmeSltManager.check())) {
        
        
        
        
        peratn.arg = null;
        f (!preprcer.read(peratn)) {