What I did to solve it was add this code to the CSS in qa-comment-voting-layer.php in the comment voting plugin :
.qa-c-item-content a {
/*text-overflow: ellipsis;*/
display: inline-block;
width: 500px;
white-space: normal;
overflow: hidden;
vertical-align: top;
}
It works, thanks for your help WarcraftQA! My solution is not optimal, but if I used yours, link would often be ended abruptly by '...' and since I use a comment editor that allows text to be hyperlinked the content was often partially hidden.