Attach (recommended) or Link to PDF file here:
https://www.nta.go.jp/taxes/tetsuzuki/shinsei/annai/joyaku/annai/pdf2/250.pdf

Configuration:
- Web browser and its version: Firefox 81.0a1
- Operating system and its version: Debian 5.6.7-1
- PDF.js version: latest in Firefox nightly
- Is a browser extension: No

Steps to reproduce the problem:
1. Open the pdf and paste the following text "本 店 又 は 主 た る 事 務 所 の 所 在 地" in "Full name" and in "Domicile and residence" textfields
2. Print or Save the pdf 

What is the expected behavior? (add screenshot)
![image](https://user-images.githubusercontent.com/5641725/91207547-30f05480-e709-11ea-9abd-2af5d970dc46.png)

What went wrong? (add screenshot)
![image](https://user-images.githubusercontent.com/5641725/91207663-69902e00-e709-11ea-8a1d-1ddd30cf0621.png)

Link to a viewer (if hosted on a site other than mozilla.github.io/pdf.js or as Firefox/Chrome extension):

"123 0 obj\n" +
              "<< /Type /Annot /Subtype /Widget /FT /Ch /DA (/Helv 5 Tf) /DR " +
              "<< /Font << /Helv 314 0 R>>>> " +
              "/Rect [0 0 32 10] /Opt [(A) (B) (C)] /V (C) " +
              "/AP << /N 1 0 R>> /M (date)>>\nendobj\n"
          );
          expect(newData.data).toEqual(
            "1 0 obj\n" +
              "<< /Length 67 /Subtype /Form /Resources << /Font << /Helv 314 0 R>>>> " +
              "/BBox [0 0 32 10]>> stream\n" +
              "/Tx BMC q BT /Helv 5 Tf 1 0 0 1 0 0 Tm 2.00 2.00 Td (C) Tj ET Q EMC\n" +
              "endstream\nendobj\n"
          );
          done();
        }, done.fail);
    });
  });
  describe("LineAnnotation", function () {
    it("should set the line coordinates", function (done) {
      const lineDict = new Dict();
      lineDict.set("Type", Name.get("Annot"));
      lineDict.set("Subtype", Name.get("Line"));
      lineDict.set("L", [1, 2, 3, 4]);
      const lineRef = Ref.get(122, 0);
      const xref = new XRefMock([{ ref: lineRef, data: lineDict }]);
      AnnotationFactory.create(
        xref,
        lineRef,
        pdfManagerMock,
        idFactoryMock