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 
buffer.push("[");
  let first = true;
  for (const val of array) {
    if (!first) {
      buffer.push(" ");
    } else {
      first = false;
    }
    writeValue(val, buffer, transform);
  }
  buffer.push("]");
}
function numberToString(value) {
  if (Number.isInteger(value)) {
    return value.toString();
  }
  const roundedValue = Math.round(value * 100);
  if (roundedValue % 100 === 0) {
    return (roundedValue / 100).toString();
  }
  if (roundedValue % 10 === 0) {
    return value.toFixed(1);
  }
  return value.toFixed(2);
}
function writeValue(value, buffer, transform) {