Self poison duration is not reduced by "reduced poison duration on you"

I wanted to build a character with Tainted Pact and Golden Rule and stack "reduced poison duration on you" to get very short poisones on myself.
This does not work, the poison still lasts too long and i just die.
https://imgur.com/a/GkucjYV

I tried a few things to reach 0s poison duration on myself to find the breakpoint:
- "128% poison duration on self reduction" with only "15% increased poison
duration" on the tree or gear. Did not work, i still get poisoned(screenshot).
- Got exactly "115% poison duration on self reduction". This changes nothing.
- Removed "poisons deal damage faster" from everywhere. This changes nothing.
- "Debuffs expire faster" seems to work. Hard to tell because i only had 25%.

I tried this in Blood Aqueduct and in Maps.
Here is my current testing pob:
https://pobb.in/YKsKoB6WVD53

Bumping this as I have had the same issue and would like to see it resolved. It appears that all sources of reduced / increased ailment duration do not work on reflected ailments, or at least on damaging ailments. Lethe Shade, for instance, also fails to work for reflected poisons and bleeds. Really hoping for a fix soon!

The interaction with Lethe shade is in the known PC issue list. I hope that they fix the whole issue soon.