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):

const GlyphMapForStandardFonts = getGlyphMapForStandardFonts();
            for (const charCode in GlyphMapForStandardFonts) {
              map[+charCode] = GlyphMapForStandardFonts[charCode];
            }
          }
        }
        this.toFontChar = map;
      }
      this.loadedName = fontName.split("-")[0];
      this.fontType = getFontType(type, subtype);
    },
    checkAndRepair: function Font_checkAndRepair(name, font, properties) {
      const VALID_TABLES = [
        "OS/2",
        "cmap",
        "head",
        "hhea",
        "hmtx",
        "maxp",
        "name",
        "post",
        "loca",
        "glyf",
        "fpgm",
        "prep",
        "cvt ",
        "CFF ",
      ];
      function readTables(file, numTables) {