The Primal Owl incorrectly applying to max bonus to first hit and all Reoccurrences

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What platform are you running Path of Building on?

Windows

What is the value from the calculation in-game?

In-Game when waiting for Max Unleash Seals and using The Primal Owl (Oshabi), I believe it should be calculated with 0 bonus for first hit and an ascending bonus for each Reoccurrence after.

So if you have 6 seals with a level 20 gem and Primal Owl, then Unleash would provide

1 + .64*(1+1.05+1.10+1.15+1.20+1.25+1.30) = 5.512

This can be represented by the formula where:
u = Damage multiplier with Unleash but no Primal Owl
p = Damage multiplier with Unleash and Primal Owl
s = Number of seals when cast
g = Unleash Support's reoccurrence multiplier (eg 0.64 at level 20)
u = 1 + sg
p = 1 + sg(1 + 0.05(s + 1)/2)

For example:
s = 6
g = 0.64
u = 1 + 6*0.64 = 4.84
p = 1 + 6*0.64*(1 + 0.05(6 + 1)/2) = 5.512

What is the value from the calculation in Path of Building?

In PoB, when using The Primal Owl with Unleash Support, PoB calculates the highest Primal Owl bonus (ie the bonus for the final reoccurrence in that cast) and applies it to the entire unleash burst, including the first hit that is not an Unleash reoccurrence.

It appears to use the following formula where:

p = Damage multiplier with Unleash and Primal Owl
s = Number of seals when cast
g = Unleash Support's reoccurrence multiplier (eg 0.64 at level 20)
p = (1 + sg) * (1 + 0.05 * s)

For example:
s = 6
g = 0.64
p = (1 + 6*0.64) * (1 + 0.05 * 6) = 6.292

How to reproduce the issue

1. Select Arc as the main skill
2. Add Unleash Support to Arc
3. Tick on Do you wait for Max Unleash Seals?
4. Select Oshabi Bloodline
5. Allocate The Primal Owl
6. See incorrect More Multiplier and damage

PoB for PoE1 build code

https://pobb.in/06T0iKY7XS84

Screenshots

Without The Primal Owl:

With The Primal Owl:

Start by reproducing the Arc and Unleash Support setup with six seals, Oshabi Bloodline, and The Primal Owl using the linked PoB build. Trace the calculation that produces the More Multiplier and compare it with the issue's expected formula, where the first hit has no Primal Owl bonus and each reoccurrence increases it. Done means the displayed damage matches the reported 5.512 multiplier for this case.