Sold Icon behind photo

Hello,

First this is really sweet little useful plug-in, and had not a single problem with downloading, installing, setting. Lets say for now, it is not a Swiss knife, but it is exactly what i need, and it is working perfectly. So what is the big deal?

The on sale icon, on a product, that is sold out(quantity is lowed down to zero), and it is not any more available in the storages, are actually behind the photos, and nothing could be saw.

I was testing it, it works, but that little bug is driving me crazy. You can check it out on the provided link. When you switch(click) on the different photos, for a breef moment you can see the “Sold out” badge showing, and when the next photo slide out, it is not visible.

This problem is not only on this product, but on every sold out product.

Please help !!! Apritiate any ideas and sugestations.
Can provide system information, and platform/plug-in/theme versions

Any ideas ?

The page I need help with: [log in to see the link]