When you use item number as a search term in the online store, the quick search results return a hit in the Categories section, but not in the Products section. When you hit enter, the product is of course displayed on the search results page.

In B2B scenarios item numbers are commonly used for searching, and when the quick search prominently states that "No products found for the keyword entered" customers are led to believe that the product in question does not exist on the site. This is of course detrimental to sales and should be fixed.