WooCommerce Product Search
The WooCommerce Product Search plugin by Itthinx does not work well together with WooCommerce pagination or Pager facets. It has a known incompatibility that causes wrong total post counts, leading to misbehaving pagination and paged pages showing no products. We’ve seen this issue specifically on product category/term pages.
The following workaround fixes this issue:
Go to WooCommerce > Settings, then Search > General and disable the setting “Optimize front end product searches” under “Standard Product Search” (which is enabled by default):
The plugin author has been notified of this issue, so it’s possible it will be fixed in future plugin versions (> v.4.6.0).