After updating the WordPress and WooCommerce recently, I have found a problem that certain categories didn't show a single product and only showed the empty category page saying that "It looks like no products were found matching your selection. Maybe try one of the links below or a search?".
No matter it was a category with products already or a newly created category which I was going to add new products to, there were randomly around 4 out of 10 categories didn't show a single product.
I eventually found that all products could show correctly under different categories only after disabling the "Hypermarket Plus" plugin.
I have also found that ["Hypermarket Plus" by MyPreview – 1.9.8 – Installed version not tested with active version of WooCommerce 4.5.1] under the WooCommerce status.
One of categories didn't show any product when the Hypermarket Plus plugin was enabled is https://tokyostyle.com.au/product-category/food/noodle/
Please help me to look into this issue and let me know if more information is needed.
Thanks so much in advance!