Duplicate skill gems in full DPS causes incorrect DPS calculations

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• 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 issues by using the search function of the issue tracker

What is the expected behaviour/value?

DPS Calculations should accurately show more/less changes to the skill.

What is the actual behaviour/value?

DPS appears to inconsistently either show the final calc values, or an impossibly large more damage multiplier.

How to reproduce the issue

If you wish to observe from nothing. The properties here appear to be slightly different. Ballista totem needs to be present as a link for a variant of the bug to appear.

1. Add a bow to an empty build.
2. Go to skills tab.
3. Add 2 instances of Toxic Rain, one without links and the other with ballista totem. Enable "Include in FUll DPS" for both
4. Start to add support gems to the first Toxic Rain.

In the PoB provided below, ballista totem does not appear to affect the outcome of the bug.

1. Go to skills tab
2. Select Toxic Rain (6)
3. Attempt to change an enabled support to a new gem.

Steps to temporarily fix the bug from the PoB provided.

1. Go to skills tab.
2. Select TR Totem (5).
3. Disable "Include in Full DPS."
4. Switch to Toxic Rain (6).
5. Attempt to change an enabled support gem to a new gem.

Character build code

https://pobb.in/hPql3eZ74-8F

Screenshots

Importa el código de build proporcionado desde pobb.in, abre la pestaña Skills y reproduce el problema activando dos instancias de Toxic Rain en Full DPS y cambiando una gema de soporte. Compara los cambios de daño more/less mostrados con el comportamiento esperado que aparece en las capturas de pantalla; el trabajo estará terminado cuando las gemas de habilidad duplicadas ya no produzcan multiplicadores de DPS inconsistentes o imposiblemente grandes.