Clair Obscur: Expedition 33

Clair Obscur: Expedition 33

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Is duenum (Maelle weapon) bugged?
It should give +1 AP for party members per Dodge or Parry in Defence Stance. But after the first round, if I stay in Defence Stance it stops working. Tried it with the AP on getting hit picto and same problem. Will change my build, cause it keeps happening or do i miss something here?