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)

this[$appendChild](node);
        this.overflow.push(node);
      }
      this[$removeChild](this.break);
      this.break = null;
    }
    if (this.presence === "hidden" || this.presence === "inactive") {
      return HTMLResult.EMPTY;
    }
    if (
      this.breakBefore.children.length > 1 ||
      this.breakAfter.children.length > 1
    ) {
      
      
      warn(
        "XFA - Several breakBefore or breakAfter in subforms: please file a bug."
      );
    }
    if (this.breakBefore.children.length >= 1) {
      const breakBefore = this.breakBefore.children[0];
      if (handleBreak(breakBefore)) {
        return HTMLResult.breakNode(breakBefore);
      }
    }
    if (this[$extra] && this[$extra].afterBreakAfter) {
      return HTMLResult.EMPTY;
    }
    
    fixDimensions(this);