{is_future} conditional not removing month

Hi, I am trying to use {is_future} conditional, it works “fine?”. It doesn′t remove the past month titles, this is my code:

[events_list_grouped mode="monthly" year="2016" Category_ID="50"]
{is_future}
<table>
<tbody>
<tr>
<td>
<div class="fechaeventos"><span class="mes">#_{M}</span><span class="dia">#_1gwpiim</span></div></td>
<td class="eventotitle">#_LINKEDNAME
#_EVENTDATES</td>
</tr>
</tbody>
</table>
<hr />
{/is_future}
[/events_list_grouped]

Screenshot without conditional: https://www.fibes.es/wp-content/uploads/2016/09/without-conditional.jpg
Screenshot with conditional: https://www.fibes.es/wp-content/uploads/2016/09/with-conditional.jpg

Any solution? thanks!