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 
pageIndex,
    };
    switch (subtype) {
      case "Link":
        return new LinkAnnotation(parameters);
      case "Text":
        return new TextAnnotation(parameters);
      case "Widget":
        let fieldType = getInheritableProperty({ dict, key: "FT" });
        fieldType = fieldType instanceof Name ? fieldType.name : null;
        switch (fieldType) {
          case "Tx":
            return new TextWidgetAnnotation(parameters);
          case "Btn":
            return new ButtonWidgetAnnotation(parameters);
          case "Ch":
            return new ChoiceWidgetAnnotation(parameters);
          case "Sig":
            return new SignatureWidgetAnnotation(parameters);
        }
        warn(
          `Unimplemented widget field type "${fieldType}", ` +
            "falling back to base field type."
        );
        return new WidgetAnnotation(parameters);
      case "Popup":
        return new PopupAnnotation(parameters);
      case "FreeText":
        return new FreeTextAnnotation(parameters);
      case "Line":