I have an archmage V whose secondary Rahkir's set bonus, the part about increasing caster levels, doesn't show up in the buff bar.

Anyone else have this issue?

I tried resetting my enhancements and equipping the ring and belt in different orders. It doesn't show up. I tried wearing them both and nuking until my SP bar was gone in a slayer area and the caster level increase doesn't show up.

I have a screesnshot of ArchmageV in my enhancements and the tier1 set bonus appearing but not the second part that I can post later.