I am using a theme to build my company’s new website. In showing it to my supervisor they were extremely displeased when after selecting a category in the portfolio section, and then selecting an item from that category, if they click on next or previous it sends them to items that are not within that same category. When I pointed out this issue to the theme maker they said that a solution would be “only possible with code customizations, that you will need to make by yourself or with 3rd-party help. Next and Previous links use default WordPress functions”.
This is not a WooCommerce plugin, but just to make an analogy - if you were on a site, and you clicked on socks, then clicked on next and instead of showing you another sock it showed you a tshirt, then a shoe, then another shirt, etc wouldn’t you think the site didn’t work very well?