I can't click on any of the library search results in itunes

Hi all. When I'm searching my library in the search box, the results come up, but I'm unable to click on either the plus sign, arrow or right click on any of the search results. First off let me say, I've read about the "untick 'search entire library' " option, but that's not what I'm looking for. I actually like the full library search with dropdown results, but unfortunately it seems to be broken. I can't figure out how to really fix this. I'm not looking for a workaround, I'm looking for the actual solution. Thanks!