Shaco's Q calculation bugged

Hi, I was just looking at the AD/AP ratios on Shaco's Q and it says: 20/35/50/65/80 (+100% AD) (+50% AP)

I've found that the (+100% AD) is NOT calculated into Q's damage. Only the base damage from the rank i.e. the 20/35/50/65/80 and the (+50% AP) are calculated

For example: If my total AD = 60 and my total AP = 20 and I have only 1 rank in Q

Then I should expect my Q to do as follows: my total AD + the 20 for one rank in Q + the 60 for 100% AD + 10 for the 50% AP for a total damage of 150 (not a backstab) give or take depending on armor/pen ect.

However I've found on live given the same stats as above Shaco will only do 90 damage give or take depending on armor/pen ect. concluding that the (+100% AD) is NOT calculated into Q's damage

I hope this information is useful and would appreciate any feedback as to its accuracy or weather or not this is the Q as Riot intended or a successful bug report, have a nice day :)