If I'm not mistaken... the items in question have reuse modifiers limited to just hostile spell cast. The problem you describe is on SOE's end, since the general reuse mod only includes mods that affect ALL spell reuse.
You'll see similar issues with reuse and casting mods limited to Beneficial and +spell dmg for a specific damage type. For example, primary and secondary +Nox/Elem Dmg adornments are not included in the general +spell dmg number.
Unfortunately nothing can be done about this on my end. SOE simply does not provide the data needed to display all mod variations.
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