[Mage] Incanter's Ward vs Rune of Power

[carolas2]

WoW Freakz spell link: https://www.wow-freakz.com/spells.php?spell=1463&&name=incanter-s-ward / https://www.wow-freakz.com/spells.php?spell=116011&&name=rune-of-power
Bug description: You can benefit from incanter's ward with rune of power on you.For example:You are on Frost and you have Incanter's Ward talent(you can't do that on same spec) and use it.If you are hit by a small group of trash you gain a percentage %spell damage.Kill them and you got 15% spell damage then you switch on Fire/Arcane and put Rune of Power.You have incanter's ward+rune of power=30% spell damage.
Proof: http://imgur.com/34ybm5F
http://imgur.com/aQtgMAP