Stopwatch does not reduce the CD of zhonas
I seldom go stopwatch, but when I did and bought zhonas thereafter I noticed that my zhonas had a 130 second cooldown. First off, why is it 130 seconds when it's supposed to be 120? Secondly, if stopwatch reduces the CD by 15%, shouldn't the CD then be 101.5 or 102? This was all from my latest Brand game that I completed a few minutes ago.
Am I missing something here or is the stopwatch item bugged?
Edit: I took the rune perfect timing and it didn't effect the zhona CD