Can I automatically expand my paragraph item after the node creation?
I have done this before, I found out that the only way to do this is with jQuery. I did like this:

/**
 * @file
 * JS code for node/edit pages
 */

(function ($, Drupal) {

  'use strict';

  $(document).ready(function () {
    $('TARGET').click();
  });


})(jQuery, Drupal);