Temper Weapon doesn't work with talismans

Just ascended to Smith of Kitava, and Temper Weapon is unusable with a talisman, and combust will not trigger if you swap to a talisman even if it has charges. Temper Weapon says it works with melee martial weapons, and talismans are both.

I am encountering the same issue. Either the wording on Temper weapon needs to be updated or Talismans should be able to use it.