Ecommerce -> Products -> Product Name/SKU/Category the PRODUCT CONVERSION RATE is always 0%

Hi,

at the menu Ecommerce -> Products -> Product Name/SKU/Category the PRODUCT CONVERSION RATE is always 0%, which is strange.

But at Ecommerce -> Sales -> Any Referrer the ECOMMERCE ORDER CONVERSION RATE looks correct.

I attach two screenshots for reference.

Please advise.

p.s. I can see the same problem in the screenshots at Ecommerce Analytics User Guide - Analytics Platform - Matomo