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)

const str = "string\x00With\x00Null\x00Chars";
      expect(removeNullCharacters(str)).toEqual("stringWithNullChars");
    });
  });
  describe("ReadableStream", function () {
    it("should return an Object", function () {
      const readable = new ReadableStream();
      expect(typeof readable).toEqual("object");
    });
    it("should have property getReader", function () {
      const readable = new ReadableStream();
      expect(typeof readable.getReader).toEqual("function");
    });
  });
  describe("URL", function () {
    it("should return an Object", function () {
      const url = new URL("https://example.com");
      expect(typeof url).toEqual("object");
    });
    it("should have property `href`", function () {
      const url = new URL("https://example.com");
      expect(typeof url.href).toEqual("string");
    });
  });
  describe("isSameOrigin", function () {
    it("handles invalid base URLs", function () {
      
      expect(isSameOrigin("/foo", "/bar")).toEqual(false);
      
      expect(isSameOrigin("blob:foo", "/bar")).toEqual(false);