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)

)
          .forEach(lines => {
            html.children.push({
              name: "p",
              children: lines,
            });
          });
      } else if (/[\u2028\n]/.test(this[$content])) {
        html.name = "div";
        html.children = [];
        
        
        this[$content].split(/[\u2028\n]/).forEach(line => {
          html.children.push(
            {
              name: "span",
              value: line,
            },
            {
              name: "br",
            }
          );
        });
      }
      return HTMLResult.success(html);
    }
    return this[$content][$toHTML](availableSpace);
  }
}
class TextEdit extends XFAObject {