I just noticed this same issue w/ the general settings page of s2member plugin. current wp/mac/chrome. I will probably fix it myself but i wanted to let you know.
edit: s2member has a z-index of 100 on the div class ws-menu-page-group-header the flyouts appear to be z-index 1000 so idk what the issue is, but when i set the ws-menu-page-group-header to z-index 1 in chromes property inspector it works as expected.
Ah I see it works when you click the product that gets pulled up, but not if you use the search in the manner of typing out the product and using the down arrow then enter to complete the search term.
