No product image on single product in Safari. *FIXED*

I've just completed a shop for a client and launched it. We discovered that on Safari only, there seems to be an issue viewing the product image on a single product page.

You can see the small images under the large one (the image switcher). The large one above is blank.

I don't have Safari more than on my iPad, so I really can't test it further. It works on all browsers.

EDIT: Found this answer on WooCommerce:
It seems to fix the issue somewhat.
.product_item a.product_item_link img{
-webkit-transform: none;
}

EDIT: The problem was related to a lazy-load image script. Only affected Safari. Nasty...