Why is the last product missing from my collection view?

Hi All

I seem to have lost the last product (bottom right) on the collection view.

Here is the current store https://jnj30at2sg4qtzor-11355980.shopifypreview.com

Click on ‘Sale’ in the menu and you will see what I mean.

If anyone has any bright ideas on how to fix this, that would be really great.