Attach (recommended) or Link to PDF file here:
[docOficialPDF.php.pdf](https://github.com/mozilla/pdf.js/files/7159923/docOficialPDF.php.pdf)

Configuration:
- Web browser and its version: Firefox nightly
- Operating system and its version: linux debian
- PDF.js version: built-in viewer
- Is a browser extension: no

Steps to reproduce the problem:
1. Open the pdf page 2
2. Checkbox "Alta" in section 2 must be checked

It works fine with evince.
const TEXT_ALIGNMENT = ["left", "center", "right"];
    const { fontSize, fontColor } = this.data.defaultAppearanceData;
    const style = element.style;
    
    
    
    if (fontSize) {
      style.fontSize = `${fontSize}px`;
    }
    style.color = Util.makeHexColor(fontColor[0], fontColor[1], fontColor[2]);
    if (this.data.textAlignment !== null) {
      style.textAlign = TEXT_ALIGNMENT[this.data.textAlignment];
    }
  }
}
class CheckboxWidgetAnnotationElement extends WidgetAnnotationElement {