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):

}, done.fail);
    });
    it("should get field object for usage in JS sandbox", function (done) {
      const textWidgetRef = Ref.get(123, 0);
      const xDictRef = Ref.get(141, 0);
      const dDictRef = Ref.get(262, 0);
      const next0Ref = Ref.get(314, 0);
      const next1Ref = Ref.get(271, 0);
      const next2Ref = Ref.get(577, 0);
      const next00Ref = Ref.get(413, 0);
      const xDict = new Dict();
      const dDict = new Dict();
      const next0Dict = new Dict();
      const next1Dict = new Dict();
      const next2Dict = new Dict();
      const next00Dict = new Dict();
      const xref = new XRefMock([
        { ref: textWidgetRef, data: textWidgetDict },
        { ref: xDictRef, data: xDict },
        { ref: dDictRef, data: dDict },
        { ref: next0Ref, data: next0Dict },
        { ref: next00Ref, data: next00Dict },
        { ref: next1Ref, data: next1Dict },
        { ref: next2Ref, data: next2Dict },
      ]);
      const JS = Name.get("JavaScript");
      const additionalActionsDict = new Dict();
      const eDict = new Dict();
      eDict.set("JS", "hello()");
      eDict.set("S", JS);