wrong value.
      this.async(function() {
        for (var el, i = 0; el = this._customElements[i], i < this._customElements.length; i++) {
          if (el.disabled)
            continue;

          if (this._usesCheckedInsteadOfValue(el)) {
            el.checked = this._customElementsInitialValues[i];
          } else {
            el.value = this._customElementsInitialValues[i];

            // In the shady DOM, the native form is all-seeing, and will
            // reset the nested inputs inside <pape