Superior rune of the mesmer
I’ve had the same problem here for a few weeks now and I just figured it out. It’s a bug related to PvP. You can’t use the same set of runes in PvP and in PvE: they won’t stack. Try changing your runes in either PvP or PvE for another set.
Hope that helps!
It’s purely a visual tooltip bug; the stat changes work perfectly fine when you equip the runes.
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