The test file at https://github.com/mozilla/pdf.js/blob/master/test/pdfs/annotation-choice-widget.pdf contains listboxes, which are not rendered correctly when printed right now. These kinds of fields are made by https://github.com/mozilla/pdf.js/blob/master/src/display/annotation_layer.js#L672-L678.

/cc @calixteman 
if (!annotationCanvasMap) {
      return;
    }
    for (const [id, canvas] of annotationCanvasMap) {
      const element = div.querySelector(`[data-annotation-id="${id}"]`);
      if (!element) {
        continue;
      }
      const { firstChild } = element;
      if (firstChild.nodeName === "CANVAS") {
        element.replaceChild(canvas, firstChild);
      } else {
        element.insertBefore(canvas, firstChild);
      }
    }
    annotationCanvasMap.clear();
  }
}
export { AnnotationLayer };