[Gameplay] Bandit Mastery Glitch or Income Item Glitch

I've been playing Pre-season for a while, and after asking around a bit, i noticed there might be a glitch with the Bandit mastery. Even if my nearby adc isn't killing a minion, I still get one gold as if they did. I don't know if this is supposed to happen because the Bandit Mastery says I get 1 gold if a nearby ally kills the minion. Maybe this is a feature with the income item, but it doesn't say that either.