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):

return this.ensure(this.pdfDocument.catalog, prop, args);
    }
    ensureDoc(prop, args) {
      return this.ensure(this.pdfDocument, prop, args);
    }
  }
  function HandlerMock() {
    this.inputs = [];
  }
  HandlerMock.prototype = {
    send(name, data) {
      this.inputs.push({ name, data });
    },
  };
  let pdfManagerMock, idFactoryMock, partialEvaluator;
  beforeAll(function (done) {
    pdfManagerMock = new PDFManagerMock({
      docBaseUrl: null,
    });
    idFactoryMock = createIdFactory( 0);
    partialEvaluator = new PartialEvaluator({
      xref: new XRefMock(),
      handler: new HandlerMock(),
      pageIndex: 0,
      idFactory: createIdFactory( 0),
      fontCache: new RefSetCache(),
    });