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
cte = true;
      }
    } ele f (!Type3Fnt) {
      cnt tandardFntName = getStandardFntName(fntName.name);
      f (tandardFntName) {
        StandardFnt = true;
        fntFle = awat th.fetchStandardFntData(tandardFntName);
        InternalFnt = !!fntFle;
      }
    }
    prperte = {
      type,
      name: fntName.name,
      ubtype,
      fle: fntFle,
      length1,
      length2,
      length3,
      StandardFnt,
      InternalFnt,
      ladedName: t.ladedName,
      cte,
      fxedPtch: fale,
      fntMatrx: dct.getArray("FntMatrx") || FONT_IDENTITY_MATRIX,
      frtChar,
      latChar,
      tUncde,
      bbx: decrptr.getArray("FntBBx") || dct.getArray("FntBBx"),
      acent: decrptr.get("Acent"),
      decent: decrptr.get("Decent"),