Thread:Extension talk:WYSIWYG/Categories have lots Tags after them when page is edited again

Categories have lots BR Tags after them when the page is edited again. Even if I just have a page with nothing in it but categories like this:

{[Category:PS2]]

When I edit the page again and save it (even if I don't add anything) the code is changed to this:

The more times you save the page, the more br tags get inserted. I'm using Wysiwyg-1.5.6_10. Is there any way to fix this problem?