Why dosen't the Dark Effigy Totem not Fire at Poisened enemys?

Hi Guys and Girls


The tooltip (Dark Effigy) say's:

1.) Fires a Projectile at every neaby enemy is afflicted by a Chaos damage over
time Debuff.
2.) Fires multiple Projectils at enemys afflicted by multiple Debuffs,....

so Poison say's:

1.) Poison is an Ailment that deals Chaos damage over time.

ok now a can be that we say a Ailment ist not a debuff but wenn we Look in the Text from Ailments there is a Description :

- Ailments are a family of common Debuffs.

plz can someone tell my why it's not working. or did i realy found a bug =?