I remembered, could it really be the sword? I remember that when this bug happened, I loaded old saves and it still continued, so I had the idea to unequip all the equipment from Mayabi, cuz it happened 2 hours after I added her to my team, I tried to remove all equips including the sword and the bug still going on, or I had to find a auto save that the bug didn't happen yet or remove her from the team in any save(including the most recent) and the bug was resolved.