-- HikaShop version -- : 3.2.2
-- Joomla version -- : 3.8.13
(I realize this isn't the most recent Hikashop. This customer's high times are Thanksgiving, Christmas, Valentine's Day and Easter. We will update universally shortly after Easter, so We can check for a fix then. Until then, I thought you should be aware)
Our customer recently added a dozen products whose Product Names began with digits (e.g.: "7 oz. Product Name" ). This automatically created a Product Alias value of "7-oz-product-name". When listed in a div list, the SEF link became "/easter/product/p7-oz-product-name" which Joomla could not resolve because of the initial "p" value being added.
Once I went back into the product and changed the Product Alias to "mc-7-oz-product-name", everything worked fine once more. I do know know if the error was caused by Hikashop or Joomla creating the alias improperly (possibly because it saw the initial character of the Alias value and decided to initially interpret it as a number instead of as a string).
Our prefix hack works well enough to finish the holidays, but we will be testing it thoroughly once we update the site after Easter.