ARAM Battle Boost Bug

I played a game of ARAM. I got Taliyah and someone used Battle Boost. I already have freljord Taliyah and i got no other skin. I literally got Freljord Taliyah as my skin. But i already owned it before the boost.

I should have gotten SG Tal Is that normal or?

I mean its not the end of the world but its kinda sad