[_ck_]

No you miss the point that both are put into the template so the ajax can hide or unhide the link as necessary depending on the post status.

But older themes without the two classes above will never hide the alternate link by default. So they both show.

There will be hundreds of questions about this now.

Put these two classes into your style.css

#thread li .undelete-post, #thread li.deleted .delete-post { display: none; }

#thread li.deleted .undelete-post { display: inline; }

and it should fix.