When a Rubick casts Enfeeble on Bane, that Bane can get rid of the debuff by simply casting Enfeeble on an enemy, if he has the "Enfeeble Steals Damage" talent

1. Skill the "Enfeeble Steals Damage" talent
2. Have an enemy Rubick cast Enfeeble on you
3. Cast Enfeeble on an enemy

Result: Your cast on Enfeeble will remove the Rubick's Enfeeble debuff on you, and then give you the Enfeeble buff.

Expected: The debuff stays and you get the buff on top of it.