Incorrect void spawn bonus calculations when using congregation support (Servant of decay item)

[yubber]

Check version

• I'm running the latest version of Path of Building and I've verified this by checking the changelog

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• I've checked for duplicate open and closed issues by using the search function of the issue tracker

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• I've checked that the calculation is supposed to be supported. If it isn't please open a feature request instead (Red text is a feature request).

What platform are you running Path of Building on?

Windows

What is the value from the calculation in-game?

Socketing congregation support into servant of decay increases number of void spawn (hereafter VS), and thus also increasing "gain as chaos damage" bonus.

Tested using Detonate Dead. Unsocketing congregation from the body armor when 5 VS are active correctly reduces the skill's chaos damage by about 6% as 1 minion disappears.

I couldn't test the other modifier (damage taken from VS life before you per VS) as it doesn't appear in the character sheet.

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

PoB correctly shows the max number of VS increasing (4 to 5), but does not calculate the gained as extra stat correctly (24% when it should be 30%).

How to reproduce the issue

1. Equip Servant of decay
2. Socket congregation support into body armor
3. Check value of non-chaos damage gained as extra chaos, under "skill hit damage" calcs for any non-chaos skill.

PoB for PoE1 build code

https://pobb.in/nEzH3gKRC4t_

Screenshots

Incorrect "gained as extra chaos":

Correct number of void spawn: