css3 - CSS columns: different render on Firefox and Chrome -

i'm trying set 2 column list (on desktop screen) using column css property:

.footer .double li {    overflow: hidden;    white-space: nowrap;    text-overflow: ellipsis;  }  .footer .double > ul ul {    padding-left: 40px;    list-style: circle;  }  .footer .double > ul ul li {    overflow: visible;  }  .footer .double > ul ul li div {    overflow: hidden;    white-space: nowrap;    text-overflow: ellipsis;  }  @media (min-width: 992px) {    .footer .double > ul {      columns: 2;      -webkit-columns: 2;      -moz-columns: 2;    }    .footer .double > ul ul {      columns: 1;      -webkit-columns: 1;      -moz-columns: 1;    }  }

<link href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css" rel="stylesheet"/>  <div class="footer">    <div class="container">      <div class="row">        <div class="col-sm-4 col-md-3 margin-bottom-20">          <img src="http://lorempixel.com/800/400" alt="" class="img-responsive">        </div>        <div class="col-sm-4 col-md-6 margin-bottom-20">          <h3 class="margin-top-0">mappa del sito</h3>          <div class="double">            <!-- subcolumn -->            <ul class="list-unstyled margin-bottom-0">              <li><a href="#">lorem ipsum dolor sit amet, consectetur.</a></li>              <li><a href="#">lorem ipsum dolor sit amet. tenetur, minus.</a></li>              <li><a href="#">odio recusandae et officiis hic fuga corrupti. </a>                <ul>                  <li><div><a href="#">sequi aut amet nisi qui eveniet</a></div></li>                  <li><div><a href="#">ipsam, velit exercitationem dolor sit amet</a></div></li>                </ul>              </li>              <li><a href="#">illo dolore, amet nam ipsum possimus.</a>                <ul>                  <li><div><a href="#">numquam sunt, adipisci necessitatibus.</a></div></li>                  <li><div><a href="#">facere cum temporibus velit illum amet</a></div></li>                </ul>              </li>              <li><a href="#">quisquam libero corrupti repellendus</a></li>              <li><a href="#">laboriosam corporis, fuga accusantium ipsa</a>                <ul>                  <li><div><a href="#">dolore, consectetur atque</a></div></li>                </ul>              </li>              <li><a href="#">lorem ipsum dolor sit amet, consectetur.</a></li>              <li><a href="#">officia harum animi consequuntur velit</a></li>            </ul>            <!-- /subcolumn -->          </div>        </div>        <div class="col-sm-4 col-md-3 margin-bottom-20">          <img src="http://lorempixel.com/800/400" alt="" class="img-responsive">        </div>      </div>    </div>  </div>

in firefox it's fine: can see circle dots in sub lists, , columns aligned on top.

in chrome, disaster: sub lists have no circle dots, , columns not aligned (seems second column mid-aligned instead of top-aligned)

i wrote fiddle showing problem.

this diference can fixed "list-style-position". browser chrome draw circle outside of element , affected when use "overflow:hidden" in ".footer .double li". using "list-style-position: outside;" in ul fix it