Attach (recommended) or Link to PDF file here:
[chinese.pdf](https://github.com/mozilla/pdf.js/files/6404389/download.1.pdf)

Configuration:
- Web browser and its version:90.0.4430.93
- Operating system and its version: mac 10.15.5
- PDF.js version: 2.9.146
- Is a browser extension:no

Steps to reproduce the problem:
1. The Chinese in the attachment cannot be rendered

Brower ✅
![image](https://user-images.githubusercontent.com/13477114/116678074-81782a00-a9db-11eb-8719-74f48fcebc2b.png)

PDF.js ❌ [https://mozilla.github.io/pdf.js/web/viewer.html](https://mozilla.github.io/pdf.js/web/viewer.html)
![image](https://user-images.githubusercontent.com/13477114/116678212-a371ac80-a9db-11eb-847f-dd1ad7752c13.png)


What is the expected behavior? (add screenshot)
**The Chinese character can be rendered**
What went wrong? (add screenshot)
**All of the Chinese character cannot be rendered**
Link to a viewer (if hosted on a site other than mozilla.github.io/pdf.js or as Firefox/Chrome extension):

} else if (flag & 32) {
          yLength = 0;
        }
        const xyLength = xLength + yLength;
        coordinatesLength += xyLength;
        if (flag & 8) {
          const repeat = glyf[j++];
          i += repeat;
          coordinatesLength += repeat * xyLength;
        }
      }
      
      if (coordinatesLength === 0) {
        return glyphProfile;
      }
      let glyphDataLength = j + coordinatesLength;
      if (glyphDataLength > glyf.length) {
        
        return glyphProfile;
      }
      if (!hintsValid && instructionsLength > 0) {
        dest.set(glyf.subarray(0, instructionsStart), destStart);
        dest.set([0, 0], destStart + instructionsStart);
        dest.set(
          glyf.subarray(instructionsEnd, glyphDataLength),
          destStart + instructionsStart + 2
        );
        glyphDataLength -= instructionsLength;
        if (glyf.length - glyphDataLength > 3) {
          glyphDataLength = (glyphDataLength + 3) & ~3;