Curse Limit does not exceed as expected

Hello Exiles,

My current curse setup is the following:
Player:
1 default curse
+ 1 curse via "Whispers of Doom"

casting:
- Assasin's Mark
- Punishment via "Profane Proxy" on left ring slot as skitterbot aura

Animate Guardian wearing:
- "Ele Weakness on Hit" corrupted-implicit Gloves
- Windscream Boots (+ 1 curse)

Ancient Wraith Monster Stats:
# Stat Id Min Max
1 curse_on_hit_level_enfeeble 8 8
2 number_of_additional_curses_allowed 1 1

Therefore I asume, I would have a naximum number of 4 curses applied on single targets at the same time.

However I only get 2 curses applied. I tried all combinations of all the different sources of curses above, with and (!) without "Whispers of Doom" allocated, and always could only apply exact 2 curses. Even tried it in PvP mode and still could only apply 2 curses.
A third curse applied would always erase one of the other two.

Maybe "Additional Curses" are not working properly.

PoB-Link: https://pobb.in/5Bk_yucZTg9z

Hope for some feedback.

Greetings

Animated Guardians do not share the player curse limit, so the enemy would reset back to 2 curses when it hits.

Don't know enough about specters to comment on that.