"Increased Mana Burn Rate" from tincture affix applies inversely

[hibernacle-cc]

Check version

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

Check for duplicates

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

Check for support

• 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?

Tinctures are not in game, but this is a simple calculation. See below. I imagine that this is how this would work given that "Increased Mana Burn Rate" is engineered to be a downside.

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

Tinctures are not in the game, so see this information: Taking the affix that increases mana burn rate (downside, 64%) for increased effect (upside, 35%) makes the mana burn infliction rate happen every 0.99 seconds (0.61 + (0.610.64) = 0.99 instead of 0.61 - (0.610.64) = 0.22 seconds.

How to reproduce the issue

1. Open a new build
2. Craft a rosethorn tincture and view the rate.
3. Add the affix and view the incorrect rate.

Character build code

I generated a fresh pob to make this easier, issue is still reproduced. 
https://pobb.in/-_tnMeR5Uj7x

Screenshots

No response

[Fidelisraphael]

The Enduring Suffusion node on Warden also has the same issue in regards to the less modifier, it applies inversely.

The reduced mana burn rate tincture nodes has additional problems though. They also increase your health and mana pool when you assign them for some reason, unsure whether they increase other things as well.