On my single product page, the product name text is added in front of the Quantity box label. It should just be “Quantity” but now it’s “[full name of product] quantity”.
Not sure if this is caused by the update to GP 1.8 or by WooCommerce 3.6.
But this code just adds the “Quantity” label to the left of the Quantity box and was working fine all along. If I didn’t have this code, it would just be a box there which will be a bit confusing for some.