More problems…
1. If you got wc-products tagged with a unique word that is only present as a tag and not as a word in the wc-description field only the tagged products will become visible in the drop-down (which is correct). However if you hit the return key (instead of clicking the tag-link) nothing will be found. Hitting the return key should also generate a total result without the need of clicking the link or links in the drop-down.
2. If you got wc-products tagged with a certain word – a word that also happends to be present in the wc-description field of other products but not tagged with that word – hitting the return key will only find the products not “tagged”. On contrary when clicking on the tag-link – only products that are “tagged” will be found.
Hope this will help solving the problem…