Attach (recommended) or Link to PDF file here:
See pdf in https://github.com/mozilla/pdf.js/issues/3109

Configuration:
- Web browser and its version: Firefox nightly
- Operating system and its version: Windows 10
- PDF.js version: builtin viewer

Steps to reproduce the problem:
1. Look at outlines

What is the expected behavior? (add screenshot)
![image](https://user-images.githubusercontent.com/5641725/141514798-0e656865-1cbf-4fb8-a89b-530d36da23c9.png)

What went wrong? (add screenshot)
![image](https://user-images.githubusercontent.com/5641725/141514740-c95e0237-8bf4-4129-a4a5-cb2ea5a3f4df.png)

return decodeURIComponent(escape(str));
}
function utf8StringToString(str) {
  return unescape(encodeURIComponent(str));
}
function isBool(v) {
  return typeof v === "boolean";
}
function isNum(v) {
  return typeof v === "number";
}
function isString(v) {
  return typeof v === "string";
}
function isArrayBuffer(v) {
  return typeof v === "object" && v !== null && v.byteLength !== undefined;
}
function isArrayEqual(arr1, arr2) {
  if (arr1.length !== arr2.length) {
    return false;
  }
  for (let i = 0, ii = arr1.length; i < ii; i++) {
    if (arr1[i] !== arr2[i]) {
      return false;
    }
  }
  return true;
}
function getModificationDate(date = new Date()) {