Viktor's Death Ray a little too wide

Last normal game felt weird as I played against a Viktor with Twisted Fate.

For some reason whenever I'm near Viktor's Death Ray( a centimeter at least from the beam and target area), the hit detection seems to think that the Death Ray actually touched me. Was even a time when I wasn't even near the Death Ray's target area, just being behind(under) the beam itself seems to damage me.

The thing really made me scratch me head. Was it intentional or was TF's cape a part of his hit detection box. Need elaboration!