Inactive products are not currently removed from a user's Favorites list even if Settings > Ecommerce > Advanced configuration > General > Only show products that are active is true. This setting should be honored within the Favorites list as it is in the product catalog (or at least mark inactive items in Favorites as 'Item no longer available' and remove action items except for 'Remove').
Developer forum
Removing inactive products from Favorites list
Replies
You must be logged in to post in the forum