On my web site about garden I installed the search function. It works well, but folders name are display without any image or information.
Then it's rather difficult to see that there is a folder. If you know, you see that there is a white image and text is in blue, but who knows (but me).
In the image I am adding, you see that I looked for "pommier" (apple tree) and the first information is a folder, almost invisible.
Thanks for reporting. I've just stumbled upon the same during Tiger 3.0 development yesterday. Originally folders were not searched, so this hasn't been a problem, but then - I can't remember why - this limitation has lifted, but hasn't been tested. I have already fixed this for the upcoming Tiger, and will migrate it over to my other skins in a few days.