If the set is complete (Helm, Armor, Pants, Ring) then the ancient options are working, no bug, no nothing.
You will see what options are active if you point with mouse over your helm on the
[Ancient Options]
If all the Agnis options are active means all is okay.
When you point on the item, like Armor and there is some options in grey color that is just visual bug, dont be affraid of it.