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)

});
  });
  describe("getModificationDate", function () {
    it("should get a correctly formatted date", function () {
      const date = new Date(Date.UTC(3141, 5, 9, 2, 6, 53));
      expect(getModificationDate(date)).toEqual("31410609020653");
    });
  });
  describe("isAscii", function () {
    it("handles ascii/non-ascii strings", function () {
      expect(isAscii("hello world")).toEqual(true);
      expect(isAscii("こんにちは世界の")).toEqual(false);
      expect(isAscii("hello world in Japanese is こんにちは世界の")).toEqual(
        false
      );
    });
  });
  describe("stringToUTF16BEString", function () {
    it("should encode a string in UTF16BE with a BOM", function () {
      expect(stringToUTF16BEString("hello world")).toEqual(
        "\xfe\xff\0h\0e\0l\0l\0o\0 \0w\0o\0r\0l\0d"
      );
      expect(stringToUTF16BEString("こんにちは世界の")).toEqual(
        "\xfe\xff\x30\x53\x30\x93\x30\x6b\x30\x61" +
          "\x30\x6f\x4e\x16\x75\x4c\x30\x6e"
      );
    });
  });
});