Nasus bug i think?

I didn't get a screen shot and my lol replay isn't working but, Today in a amazing susan Game I got 9 stacks off of nexus on q when last hitting it. I believe it was a bug wouldn't have changed out come of games in anyway just thought I would share this and see if anyone else got the same result or if they knew it was a bug.

see ya' on the rift -Nuttellaonteemo