Arcane intensity - Passive Skill bug

Once you apply the arcane intensity passive skill, it doesn't update the damage for skill spells.

For example: Without the +100 mana item, the damage would be 500. When you equip the +100 mana item then the damage is still 500, it doesn't update the damage for the arcane intensity passive skill.

Once you refund the passive skill and apply again then it corrects the damage to 510 for example.