Issue #3253225 by Oscaner: No check for disabled input

    var theFormId = theElement.target.id;

    var selectorId = theFormId.replace('multiple_select', 'edit').replace(/\_/g, '-');

    $('input[type="checkbox"][data-drupal-selector^="' + selectorId + '-"]').each(function () {

      if (!$(this).is(':disabled')) {

        this.checked = $('#' + theFormId).is(':checked');

      }

    });

  }