Fixed in 1.5.1 for all but weapon 9
Some of the Mage character’s weapons remain unaffected by Charisma.
This test was performed at 9, and 39 charisma. The following weapons had no change in the mana they consumed, while the rest behaved as expected.
These are: Weapon 2 (sapphire wand), weapon 3 (Ruby wand,) Weapon 7 (Fireball), Weapon 8, and Weapon 9.
The rest scaled adequately with charisma.