Attach (recommended) or Link to PDF file here:
http://education.ohio.gov/getattachment/Topics/Special-Education/Preschool-Special-Education/ETR-Preschool-Planning-Form.pdf.aspx

- Web browser and its version: Firefox 89.0.1
- Operating system and its version: Windows 10 10.0.19043.1052
- PDF.js version: commit 5d251a3a3e7bfaa8fbfa07f0b7f9901eb3f999d9
- Is a browser extension: No

Steps to reproduce the problem:
1. Enable XFA support
2. Open form

What is the expected behavior? (add screenshot)
Shapes stay inside table cells
![image](https://user-images.githubusercontent.com/7104454/122572782-1252a580-d01c-11eb-9d0f-5fed46d6f2fe.png)

What went wrong? (add screenshot)
Shapes fall outside cells (among other issues)
![image](https://user-images.githubusercontent.com/7104454/122572885-2d251a00-d01c-11eb-8863-fa3b9969f0ea.png)

return new Margin(attrs);
  }
  static mdp(attrs) {
    return new Mdp(attrs);
  }
  static medium(attrs) {
    return new Medium(attrs);
  }
  static message(attrs) {
    return new Message(attrs);
  }
  static numericEdit(attrs) {
    return new NumericEdit(attrs);
  }
  static occur(attrs) {
    return new Occur(attrs);
  }
  static oid(attrs) {
    return new Oid(attrs);
  }
  static oids(attrs) {
    return new Oids(attrs);
  }
  static overflow(attrs) {
    return new Overflow(attrs);
  }
  static pageArea(attrs) {
    return new PageArea(attrs);
  }
  static pageSet(attrs) {