Support to keep in context products in multiple categories?
Not sure if it is a bug or if it qualifies for general discussion or feature suggestion.
When a product is in multiple categories, its breadcrumb defaults to the first one regardless of how you arrive to the product page, and the Previous/Next plugin iterates through this same first category (rather than through the subset you were viewing).
It's discussed a bit over on http://www.nopcommerce.com/boards/t/8174/incorrect-breadcrumb-for-products-in-multiple-categories.aspx
. This discussion is a bit dated, unsure if there is newer/better info (or if Previous/Next has improvements on this).
This is counterintuitive, specially for Previous/Next plugin. If you arrive to a product through a category (like "On Sale", or through a manufacturer), you'd expect to be able to iterate only products in this category (not to land back in another list of products).
Implementation might not be trivial. Using a session variable (as suggested in the nopC board) can be fragile (ie, if you are visiting multiple pages on the same session in multiple windows/tabs). I'm guessing it would require adding parameters to the links when browsing the site using cats or manufacturers (so the product page can build the correct breadcrumb and Previous/Next can iterate the correct subset).