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):

getUnicodeRangeFor,
  mapSpecialUnicodeValues,
} from "./unicode.js";
import {
  isWhiteSpace,
  MissingDataException,
  readUint32,
} from "./core_utils.js";
import { FontRendererFactory } from "./font_renderer.js";
import { IdentityCMap } from "./cmap.js";
import { Stream } from "./stream.js";
import { Type1Parser } from "./type1_parser.js";
const PRIVATE_USE_AREAS = [
  [0xe000, 0xf8ff], 
  [0x100000, 0x10fffd], 
];
var PDF_GLYPH_SPACE_UNITS = 1000;
var SEAC_ANALYSIS_ENABLED = true;
const EXPORT_DATA_PROPERTIES = [
  "ascent",
  "bbox",
  "black",
  "bold",
  "charProcOperatorList",
  "composite",
  "data",
  "defaultVMetrics",
  "defaultWidth",
  "descent",
  "fallbackName",