Hi etagure,
Try to open the file :
[ROOT]/modules/mod_latestnewsxtd/helper.php
then change this code (line 138) :
$item->title = htmlspecialchars( $item->title );
with
$item->title = htmlspecialchars( $item->title );
$item->title = modLatestNewsXtdHelper::truncate($item->title, 5);