Hi there,
That’s the expected behavior actually – the customizer options don’t apply to shortcode currently.
I had a chat with Tom recently about it and apparently it’s a bit tricky to do.
Give this CSS a shot though:
@media (max-width: 768px) {
.woocommerce[class*=columns-] ul.products li.product {
width: 50%;
float: left !important;
clear: both !important;
}
}
Adding CSS: https://docs.generatepress.com/article/adding-css/
Let me know if this helps 🙂