Attach (recommended) or Link to PDF file here:
https://www.placementsmondiauxsunlife.com/content/dam/sunlife/regional/canada/documents/slgi/4839-I-F.pdf

Configuration:

- Web browser and its version: 91.0a1 (2021-07-03) (64-bit)
- Operating system and its version: Windows 10

Steps to reproduce the problem:
1. enableXfa = true
2. Open form

What is the expected behavior? (add screenshot)

![image](https://user-images.githubusercontent.com/7104454/124389449-1ede2b80-dcb5-11eb-98ba-01e1f3d6c6f5.png)


What went wrong? (add screenshot)

![image](https://user-images.githubusercontent.com/7104454/124389460-2c93b100-dcb5-11eb-9768-98ddd2c8f1e7.png)

const parent = this[$getParent]();
    const style = Object.create(null);
    let propName = "color";
    if (parent instanceof Border) {
      propName = "background";
    }
    if (parent instanceof Rectangle || parent instanceof Arc) {
      propName = "fill";
      style.fill = "white";
    }
    for (const name of Object.getOwnPropertyNames(this)) {
      if (name === "extras" || name === "color") {
        continue;
      }
      const obj = this[name];
      if (!(obj instanceof XFAObject)) {
        continue;
      }
      style[propName] = obj[$toStyle](this.color);
      return style;
    }
    if (this.color) {
      style[propName] = this.color[$toStyle]();
    }
    return style;
  }
}
class Filter extends XFAObject {