Liljeholm

So I seems to have some issue regardings some items showing to little "spellpower" and so far its just me... Ex. [Spellpower Goggles Xtreme] says its up to 21 spelldamage on the internet and my friends who has it says 21 aswell, But it just shows 12 for me, and its more items aswell, almost every item with spelldamage show lower than it shall be. Why is that?