Inevitable Agony + Doedre's Undoing not working together

Not sure if this is a bug, or this gem was never intended to work with inevitable agony, but agony does not apply before or after the doedres proc as it should. Doedres states that it applies the supported curse for 3 seconds after procing, and that does not happen with agony. Agony also never applies when mobs walk into the curse, so that may be why. It may actually not even be registering the agony curse at all.

Doedres Undoing works with every other curse I tested, but it did not work with Inevitable Agony.