Invisible Buff Effect MTX not working for skills

I'm not sure what exactly it's not working for, but it's not working for Wind Dancer.

I know that it works for some of the Aura's, however the downside is it also removes the aura icon from Monsters, not sure if that's intended but it's annoying not knowing what monsters are affected for your aura (such as temp chains).

But also annoying that I can't remove some of the effects in this game like Wind Dancer.

Another thing I've noticed is that if I have two skills I'm able to apply it to, and apply it to one, it acts as if both skills have it applied. Removing the MTX from one removes it from the other.

It's broken.