I have made this modification in the Kurouto skin
main.php line 53
<li><a href="{$crumb.url}">{substr($crumb.title,0,100)}</a></li>
that limit the number of char to 100 in the bar "where you are" or call it "adress bar"
If that can help someone
But I would like to suggest a option so I can change that in the admin panel like the product description short have it
thx
J-Marc