Vladimirs W

Did you know that Mordekaisers E, can target the untargetable? When you use W on Vlad, mord can still use is E on you, althought you're suppose to be "untargetable" as the description says unless im reading the definition of "untargetable" wrong. I don't know if it is a bug or what, but atleast be more clear as to what untargetable means. Either im "untargetable" or "semi-targetable" make up your mind rito > _>