Hello!
did a bit of research and testing.
1. The debug message does pop up when the ability is cast.
2. Can confirm through the help of
@BooshBooshBoosh that the debuff does cast on the target.
3. The debug message seems to pop up 2-3-4 or so times before on its last attempt a small patch of green sparkles appears (easy to miss seeing it but it's there).
[No Screenshot, wasnt fast enough to catch it but imagine a green splash of sparkles]
I put an aura of nausea on a pet that had no other abilities - willtrain a new pet with other abilties and see if it has any issues then.
More to follow