Not sure if you are already aware of it, but just throwing it out there as it's not very obvious.Depending on the theme you are using, sometimes the variables in your product-card.liquid file may refer to the product in a different way than "product"...

You can add  | split: "?" | first  to the link tag in product card and all other places that dynamically create the urls. This will split the url at the first ? (which is usually the first sign in the url parameters) and only show the first half of t...