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

const parent = this[$getParent]();
    if (parent instanceof Field) {
      if (parent.ui && parent.ui.imageEdit) {
        if (!this.image) {
          this.image = new Image({});
          this[$appendChild](this.image);
        }
        this.image[$content] = value[$content];
        return;
      }
    }
    const valueName = value[$nodeName];
    if (this[valueName] !== null) {
      this[valueName][$content] = value[$content];
      return;
    }
    
    for (const name of Object.getOwnPropertyNames(this)) {
      const obj = this[name];
      if (obj instanceof XFAObject) {
        this[name] = null;
        this[$removeChild](obj);
      }
    }
    this[value[$nodeName]] = value;
    this[$appendChild](value);
  }
  [$text]() {