Momentum and Ambrosia on Flame Breath

Hello guys, does anyone know if these 2 supports work on Flame Breath?
Tooltip DPS doesn't change and there is no visual cue.
Maybe i am just playing on a 4 link this whole time :D

Bump, would also like to know this as I'm trying to figure our the best way to maximize damage on this skill without investing into ignite, just hit damage. Seems like Rapid Attacks 2, Burgeon, and Elemental Armaments 2 are the best so far, with Mobility and Efficiency 2 for QOL.

Based on my own testing they both do increase damage despite what I'm assuming is a bugged tooltip. I equipped a normal white Talisman and only socketed each gem individually to test damage on the Yeti in Howling Caves. I did five runs with each gem and averaged them out for a kill time. After replaying recordings and using a stop watch here are the results:


No Gems
13.10s = Baseline

Momentum
10.46s = 20.15% increase

Ambrosia
10.60s = 19.08% increase

Burgeon II
10.42s = 20.46% increase

Elemental Armament II
11.75s = 10.31% increase


Obviously they don't match the exact damage increase the gems claim but to estimate if they do actually boost damage this was sufficient enough to convince me.