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 (!this._isChoice) {
      return;
    }
    if (!Array.isArray(indices)) {
      indices = [indices];
    }
    if (
      !indices.every(
        i =>
          typeof i === "number" &&
          Number.isInteger(i) &&
          i >= 0 &&
          i < this.numItems
      )
    ) {
      return;
    }
    indices.sort();
    if (this.multipleSelection) {
      this._currentValueIndices = indices;
      this._value = [];
      indices.forEach(i => {
        this._value.push(this._items[i].displayValue);
      });
    } else {
      if (indices.length > 0) {
        indices = indices.splice(1, indices.length - 1);