Question about Kanna Link

Until Unlimited, most if not all Total Damage displayed in Range will be shown as multiplicative, but are actually calculated as additive. This is a bug in Tempest and prior.

All the total damage skills I've tested have been additive depending on whether they're active or passive, by that I mean, all the active damage buffs I've tested, Frenized Soul+Heroic Memories, Priere d'Aria+Heroic Memories, Catalyze+Transfig, Spirit Surge+Ancient Warding, have all been additive with each other, and so far for passives I've only tested Snow Charge (35%) and Kanna's Elementalism (10%), but those two were additive. 123 atk, 418 str, 49 dex should give me a range of 1.49 * (4 * 418 + 49) * 123/100, or 3154. My displayed range is 4573, which is about 1.45x what it should be. I've only seen a combination of an active and a passive being multiplicative, and sums of actives and sums of passives as well.