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._buttonIcon) {
      this._buttonIcon = [null, null, null];
    }
    this._buttonIcon[nFace] = oIcon;
  }
  checkThisBox(nWidget, bCheckIt = true) {}
  clearItems() {
    if (!this._isChoice) {
      throw new Error("Not a choice widget");
    }
    this._items = [];
    this._send({ id: this._id, clear: null });
  }
  deleteItemAt(nIdx = null) {
    if (!this._isChoice) {
      throw new Error("Not a choice widget");
    }
    if (!this.numItems) {
      return;
    }
    if (nIdx === null) {