Dear Sir,
We fixed this issue by custom in /public_html/modules/mod_k2_tools/helper.php
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use the code below
$string_color1=strstr($row->name, "|" );
$string_color2=str_replace("|", "#", $string_color1);
$string_cate=str_replace($string_color1, "", $row->name);
if (modK2ToolsHelper::hasChildren($row->id))
{
$output .= '<li'.$active.'><a href="'.urldecode(JRoute::_(K2HelperRoute::getCategoryRoute($row->id.':'.urlencode($row->alias)))).'"><span class="catTitle">'.$string_cate.'</span><span class="catCounter">'.$row->numOfItems.'</span></a>';
modK2ToolsHelper::treerecurse($params, $row->id, $level + 1);
$output .= '</li>';
}
else
{
$output .= '<li'.$active.'><a href="'.urldecode(JRoute::_(K2HelperRoute::getCategoryRoute($row->id.':'.urlencode($row->alias)))).'"><span class="catTitle">'.$string_cate.'</span><span class="catCounter">'.$row->numOfItems.'</span></a></li>';
}
please check your site again
thanks