Can't click on friends list, group and game invite notifications

For some reason its only that lower bar I can't click on. The mouse doesn't turn into a finger like it normally does. At first I thought it was my usb mouse since it does act weird at times, but then I tried switching to my laptop mouse and same thing. It's annoying because I want to see who is on and I can't :/ I'm "assuming" its a minor client bug. I have re-opened the client and same thing.