Yes this has been fixed and is cart v3.81 is availible on the downloads page. Also, cart version 3.85 has been released and is also availible on the downloads page. In Cart v3.85 the product details page has been split out as a separate module that enables SEO friendly URLs. For example, if you have a product titled Halo4 and in the product setup screen SEO setup section you add Halo4 as your product page name the product detail page name would be the following:
www.yourdomain.com/halo4.aspx
Additionally, you are now able to add other modules to the product details page like the category menu module, mini cart module and any other 3rd party modules you like.