Adding a sellable item in Sitecore Experience Commerce (XC) Business Tools or making changes to the existing sellable item might result in the product not being displayed on a storefront unless Content Delivery (CD) server is restarted.
To resolve the issue, upgrade your instance to Sitecore XP 9.1.0 and Sitecore XC 9.1.0 or later versions.
Optionally, consider restarting the entire CD instance.