Summoner skill "Physick" not calculated via INT as it should

Time: -
Frequency: All the time
World name: Pheonix-EU
Character name: Dajova Pardonia
Retainer name: -
NPC name: -
Monster name: -
Class/Level: 70
Party or solo: Anytime
In-game time: -
Area and coordinates: -
Housing: -
Steps:
1. Switch to the Summoner job
2. Use the "Physick" spell
3. Incorrect numbers (650~ heal at lvl 70, which is just exactly over the manacost itself. Even the RDM have higher heals at lvl 54)

http://i.imgur.com/noNIcRy.png

The spell calculates it using MIND instead of INT like it should when using the SMN job, because it branches out from ARC, which is also the base-job for Scholar. This should not be the case.

This is working as intended.
They can't make Physick scale off INT because then it does nothing for Scholar. Unless they made two separate versions of Physick they can't have it based on the main stat for both jobs. Spells like Vercure don't have this problem because they only have to scale off a single stat (INT, STR/VIT for Clemency)