Attach (recommended) or Link to PDF file here:
https://www.nta.go.jp/taxes/tetsuzuki/shinsei/annai/joyaku/annai/pdf2/250.pdf

Configuration:
- Web browser and its version: Firefox 81.0a1
- Operating system and its version: Debian 5.6.7-1
- PDF.js version: latest in Firefox nightly
- Is a browser extension: No

Steps to reproduce the problem:
1. Open the pdf and paste the following text "本 店 又 は 主 た る 事 務 所 の 所 在 地" in "Full name" and in "Domicile and residence" textfields
2. Print or Save the pdf 

What is the expected behavior? (add screenshot)
![image](https://user-images.githubusercontent.com/5641725/91207547-30f05480-e709-11ea-9abd-2af5d970dc46.png)

What went wrong? (add screenshot)
![image](https://user-images.githubusercontent.com/5641725/91207663-69902e00-e709-11ea-8a1d-1ddd30cf0621.png)

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

source,
        sourceStart,
        sourceEnd,
        dest,
        destStart,
        hintsValid
      ) {
        var glyphProfile = {
          length: 0,
          sizeOfInstructions: 0,
        };
        if (sourceEnd - sourceStart <= 12) {
          
          return glyphProfile;
        }
        var glyf = source.subarray(sourceStart, sourceEnd);
        var contoursCount = signedInt16(glyf[0], glyf[1]);
        if (contoursCount < 0) {
          
          contoursCount = -1;
          writeSignedInt16(glyf, 0, contoursCount);
          
          dest.set(glyf, destStart);
          glyphProfile.length = glyf.length;
          return glyphProfile;
        }
        var i,