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)

Object.assign(style, this.fill[$toStyle]());
    }
    if (this.corner.children.some(node => node.radius !== 0)) {
      const cornerStyles = this.corner.children.map(node => node[$toStyle]());
      if (cornerStyles.length === 2 || cornerStyles.length === 3) {
        const last = cornerStyles[cornerStyles.length - 1];
        for (let i = cornerStyles.length; i < 4; i++) {
          cornerStyles.push(last);
        }
      }
      style.borderRadius = cornerStyles.map(s => s.radius).join(" ");
    }
    switch (this.presence) {
      case "invisible":
      case "hidden":
        style.borderStyle = "";
        break;
      case "inactive":
        style.borderStyle = "none";
        break;
      default:
        style.borderStyle = edgeStyles.map(s => s.style).join(" ");
        break;
    }
    style.borderWidth = edgeStyles.map(s => s.width).join(" ");
    style.borderColor = edgeStyles.map(s => s.color).join(" ");
    return style;
  }
}
class Break extends XFAObject {