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 
constructor(parameters) {
    super(parameters);
    this.data.annotationType = AnnotationType.LINE;
    const lineCoordinates = parameters.dict.getArray("L");
    this.data.lineCoordinates = Util.normalizeRect(lineCoordinates);
    if (!this.appearance) {
      
      const strokeColor = this.color
        ? Array.from(this.color).map(c => c / 255)
        : [0, 0, 0];
      const strokeAlpha = parameters.dict.get("CA");
      
      
      let fillColor = null,
        interiorColor = parameters.dict.getArray("IC");
      if (interiorColor) {
        interiorColor = getRgbColor(interiorColor, null);
        fillColor = interiorColor
          ? Array.from(interiorColor).map(c => c / 255)
          : null;
      }
      const fillAlpha = fillColor ? strokeAlpha : null;
      const borderWidth = this.borderStyle.width || 1,
        borderAdjust = 2 * borderWidth;
      
      
      const bbox = [
        this.data.lineCoordinates[0] - borderAdjust,
        this.data.lineCoordinates[1] - borderAdjust,
        this.data.lineCoordinates[2] + borderAdjust,