Hello,
As your duplicate product did not shown the correct number of reviews. There is a review but still it displays “0” in the review tab. Have you used some third party plugin for product duplication?
That might be possible that the products duplicated successfully but did not update the database for the reviews of those duplicate products.
Also I test both of those products by adding test reviews. But still the number of reviews shown zero in tab title.
Could you please deactivate all of your third party plugins and then check back. Because it seems some of your third party plugins conflict with default WooCommerce functionality. Because reviews is a part of WooCommerce plugin.
If you do not want to display fixed star ratings in shop page items. Then try to use some different style for product grid from Theme Settings >> Shop >> PRODUCTS STYLES >> Hover on product.
Best Regards.