Attach (recommended) or Link to PDF file here:
https://www.canada.ca/content/dam/ircc/migration/ircc/english/pdf/kits/forms/eimm5669e.pdf
[eimm5669e.pdf](https://github.com/mozilla/pdf.js/files/7225677/eimm5669e.2.pdf)

Configuration:
- Web browser and its version: Firefox nightly
- Operating system and its version: Linux Debian

Steps to reproduce the problem:
1. Look at the bottom of page 2

return new SubformSet(attrs);
  }
  static subjectDN(attrs) {
    return new SubjectDN(attrs);
  }
  static subjectDNs(attrs) {
    return new SubjectDNs(attrs);
  }
  static submit(attrs) {
    return new Submit(attrs);
  }
  static template(attrs) {
    return new Template(attrs);
  }
  static text(attrs) {
    return new Text(attrs);
  }
  static textEdit(attrs) {
    return new TextEdit(attrs);
  }
  static time(attrs) {
    return new Time(attrs);
  }
  static timeStamp(attrs) {
    return new TimeStamp(attrs);
  }
  static toolTip(attrs) {
    return new ToolTip(attrs);
  }
  static traversal(attrs) {