Actually, the cart button is already hidden until the page is fully loaded, and I haven't been able to select a size and add to cart before it's fully loaded.  With Javascript disabled or an ad blocker, it also works fine. 

Hi Paul,  Thank you so much, I will try that out and get back to you. 

Hi Guleria, Thanks for your reply!  An example as mentioned is https://au.deuscustoms.com/products/whiplash-tee-forest-night - depending on your location, you will have to use a VPN set to Australia. 

We have a few orders every week where the selected size in Shopify shows up as XS (our smallest, default size) even though the customer selected a different size. This of course leads to unnecessary returns and is annoying for the customer.  Most ord...