
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)


this.operatorListId = operatorListId;
    this.isSpace = isSpace;
    this.isInFont = isInFont;
  }
  Glyph.prototype.matchesForCache = function (
    fontChar,
    unicode,
    accent,
    width,
    vmetric,
    operatorListId,
    isSpace,
    isInFont
  ) {
    return (
      this.fontChar === fontChar &&
      this.unicode === unicode &&
      this.accent === accent &&
      this.width === width &&
      this.vmetric === vmetric &&
      this.operatorListId === operatorListId &&
      this.isSpace === isSpace &&
      this.isInFont === isInFont
    );
  };
  return Glyph;
})();
var ToUnicodeMap = (function ToUnicodeMapClosure() {
  
  function ToUnicodeMap(cmap = []) {