Rune of Vampirism [PVP BUG]
It happens in PVE, too, if a piece of your armor gets damaged. I usually have to repair and then reapply my set of armor to get it working again.
Moreover, if you die in a PvP match the Rune is going to bug again.
Thus, is it impossible to use this rune in a pvp match soloQ or teamQ, since you don’t have the chance to replace your rune to fix this bug.