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):

AnnotationFactory.create(
        xref,
        buttonWidgetRef,
        pdfManagerMock,
        idFactoryMock
      ).then(({ data }) => {
        ta.url).toEqual("https://developer.mozilla.org/en-US/");
        done();
      }, done.fail);
    });
    it("should handle URL in AA dict in push buttons", function (done) {
      const buttonWidgetRef = Ref.get(124, 0);
      buttonWidgetDict.set("Ff", AnnotationFieldFlag.PUSHBUTTON);
      // D stands for MouseDown
      const dDict = new Dict();
      dDict.set("S", Name.get("JavaScript"));
      dDict.set(
        "JS",
        "app.launchURL('https://developer.mozilla.org/en-US/', true)"
      );
      const actionDict = new Dict();
      actionDict.set("D", dDict);
      buttonWidgetDict.set("AA", actionDict);
      const xref = new XRefMock([
        { ref: buttonWidgetRef, data: buttonWidgetDict },
      ]);
      AnnotationFactory.create(
        xref,
        buttonWidgetRef,
        pdfManagerMock,