core-menu/core-submenu alignment issue

<core-menu

  valueattr="hash"

  selected="{{ route }}"

  selectedModel="{{ selectedPage }}">

  <template repeat="{{ menu }}">

    <template if="{{ submenu }}">

      <core-submenu label="{{ name }}" icon="{{ icon }}">

        <template repeat="{{ submenu }}">

          <paper-item hash="#{{ path }}" label="{{ name }}">

            <a href="#{{ path }}"></a>

          </paper-item>

        </template>

      </core-submenu>

    </template>

    <template if="{{ !submenu }}">

      <paper-item hash="#{{ path }}" label="{{ name }}" icon="{{ icon }}">

        <a href="#{{ path }}"></a>

      </paper-item>

    </template>

  </template>

</core-menu>