Nasus (Susan) bug

There's a weird bug that I have when playing Susan. For some reason it will highlight my W even if I take Q first skill at lvl 1, and it will highlight the W throughout the entire game. When I say highlight, I mean it in the same way as like, a vayne W (I think), like the W is a passive skill. Its weird and off putting. On top of that, the ability also doesnt grey out when you run out of mana like the other abilities. Plz pet Susan with that bug fix plz.