
Attach (recommended) or Link to PDF file here:
[NAPEN16171380959.pdf](https://github.com/mozilla/pdf.js/files/6143802/NAPEN16171380959.pdf)

Configuration:
- Web browser and its version: Firefox 88 Nightly
- Operating system and its version: Windows 10
- PDF.js version:
- Is a browser extension: No

What went wrong? (add screenshot)
![](https://user-media-prod-cdn.itsre-sumo.mozilla.net/uploads/images/2021-03-15-10-58-27-ce2796.png)


if (glyphsUnicodeMap[name] !== undefined) {
    return name;
  }
  
  var unicode = getUnicodeForGlyph(name, glyphsUnicodeMap);
  if (unicode !== -1) {
    for (var key in glyphsUnicodeMap) {
      if (glyphsUnicodeMap[key] === unicode) {
        return key;
      }
    }
  }
  info("Unable to recover a standard glyph name for: " + name);
  return name;
}
var Glyph = (function GlyphClosure() {
  
  function Glyph(