EDIT: I just thought to try adding to cart using Incognito and that worked, but the cart icon at the top still shows as being empty
I have upgraded to 1.3.3 and thankfully, it does seem as if the upgrade ran smoothly for me apart from having to get my host to upgrade the php.
But I have noticed that 'Add to Cart' from my home page isn't working. The customer has to now open the product page and then add to cart from there.
Now that I look at it, the cart is showing as empty when on all pages other than the cart. I hope that makes sense but hopefully the screenshots will explain.
Also, how do I get rid of that 'Print' option? I'm sure I didn't used to have that showing before