If you use theme with components that different from components on standard theme, that can cause some problems after products filtering. You can fix this problem yourself.
- Open admin panel of your site and go to WooCommerce -> Product Filters
- For fix problem you need to set right next fields Products selector, Product count selector, Product order by selector and Products pagination selector
- By default that used:
- Products selector: ul.products
- Product count selector: .woocommerce-result-count
- Product order by selector: form.woocommerce-ordering
- Products pagination selector: .woocommerce-pagination
- What value you need to set you can see at shop page via page inspector of your browser (If you do not know how to do it, then ask the author’s themes)