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.
["change", "Validate"],
          ["change", "Action"],
          ["focus", "Focus"],
          ["blur", "Blur"],
          ["mousedown", "Mouse Down"],
          ["mouseenter", "Mouse Enter"],
          ["mouseleave", "Mouse Exit"],
          ["mouseup", "Mouse Up"],
        ],
        event => event.target.checked
      );
    }
    this.container.appendChild(element);
    return this.container;
  }
}
class PushButtonWidgetAnnotationElement extends LinkAnnotationElement {
  render() {
    
    
    
    const container = super.render();
    container.className = "buttonWidgetAnnotation pushButton";
    if (this.data.alternativeText) {
      container.title = this.data.alternativeText;
    }
    return container;
  }
}
class ChoiceWidgetAnnotationElement extends WidgetAnnotationElement {