Attach (recommended) or Link to PDF file here:
[test2-3.pdf](https://github.com/mozilla/pdf.js/files/7881930/test2-3.pdf)

Configuration:
- Web browser and its version: Chrome and Version 93.0.4577.63
- Operating system and its version: Ubuntu 20.04.1 LTS
- PDF.js version: v2.12.313
- Is a browser extension: No

What is the expected behavior? 
![Screenshot from 2022-01-17 18-21-02](https://user-images.githubusercontent.com/29357161/149772453-5906d92a-7cf5-458f-8315-695d78aa9674.png)


What went wrong? 
![Screenshot from 2022-01-17 18-20-24](https://user-images.githubusercontent.com/29357161/149772465-07dd71ef-5d41-42c9-8b13-466f8eee116a.png)


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

* the charStrings.
 */
const Type1CharString = (function Type1CharStringClosure() {
  const COMMAND_MAP = {
    hstem: [1],
    vstem: [3],
    vmoveto: [4],
    rlineto: [5],
    hlineto: [6],
    vlineto: [7],
    rrcurveto: [8],
    callsubr: [10],
    flex: [12, 35],
    drop: [12, 18],
    endchar: [14],
    rmoveto: [21],
    hmoveto: [22],
    vhcurveto: [30],
    hvcurveto: [31],
  };
  
  class Type1CharString {
    constructor() {
      this.width = 0;
      this.lsb = 0;
      this.flexing = false;
      this.output = [];
      this.stack = [];
    }
    convert(encoded, subrs, seacAnalysisEnabled) {