Trait Inspiring Finish : diminish heailng?

[CaerArianrhod]

Hello,

I just did a couple of tests, but i can not see this trait is working as WAI.

First row in the pic with tree ballads and anthem, My outgoing healing is 79.1%

Second row in the pic:
Stacking up to 15% the Inspiring Finish proc, tree ballads and anthem, cast Coda of Resonance, My outgoing Healing in the character panel sows: 94.1%

I could expect a couple of things:
my heals will be increased by 0.9% (saying 80% is hard cap whatever the character panel sows for outgoing healing)
my heals will be increased by the 15%
my heals will be increased by 5% (saying the anthem is removed with the coda, even if the buff is still visible in the buff bar, But that is not the case as you can see on the inductions (BC has it's inductions free version after the code so see the other two skills))

but what i would not expect that my heals getting lower.

Can some one check this too?

[hanxcve]

lol, you don't have any ballads up on you when you use coda so -18% outgoing healing, +15% from inspiring finish which = 3% loss.