I looked at the latest version in our DEMO, and i don't see this kind of behavior, i suppose this issue has been fixed already. Beside in your website, the "sold out" badge appears only in "GRIDVIEW", the MultiGridView and ListView are all okay though. Since we have updated lots of things lately, i can't remember when it got patched. But definetely it is patched.
I am resending you the latest version of PureMArt. Can you please use this version instead?
You might copy only /category/ folder though. But i would recommend you to reapply it as whole, since you might get other patches as well.
Cheers.