Blokie

Hi, first post. I just purchased an 06 Fusion SE V6, and am loving it so far. My question is about the top of the windshield (exterior), where it meets the roof .... is there supposed to be a seal there ? I have seals along both sides of the windshield but nothing along the top, is this a design feature so that it flows into the roofline or did the installer have a part left over !