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)

"draw",
        "field",
        "exclGroup",
        "subform",
        "subformSet",
      ]),
      include: true,
    });
    if (!result.success) {
      if (result.isBreak()) {
        return result;
      }
      
      
      delete this[$extra];
      return HTMLResult.FAILURE;
    }
    style.width = measureToString(this[$extra].width);
    style.height = measureToString(this[$extra].height);
    const html = {
      name: "div",
      attributes,
      children,
    };
    const bbox = [this.x, this.y, this[$extra].width, this[$extra].height];
    delete this[$extra];
    return HTMLResult.success(html, bbox);
  }
}
class Assist extends XFAObject {