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 parent[$getNextPage]();
      }
      this[$cleanPage]();
      return this[$getNextPage]();
    }
    const pageNumber = this[$getTemplateRoot]()[$extra].pageNumber;
    const parity = pageNumber % 2 === 0 ? "even" : "odd";
    const position = pageNumber === 0 ? "first" : "rest";
    let page = this.pageArea.children.find(
      p => p.oddOrEven === parity && p.pagePosition === position
    );
    if (page) {
      return page;
    }
    page = this.pageArea.children.find(
      p => p.oddOrEven === "any" && p.pagePosition === position
    );
    if (page) {
      return page;
    }
    page = this.pageArea.children.find(
      p => p.oddOrEven === "any" && p.pagePosition === "any"
    );
    if (page) {
      return page;
    }
    return this.pageArea.children[0];
  }
}
class Para extends XFAObject {