Kleptomancy Inconsistent (In a bad way)

I just played a game as ezreal with klepto and didn't get any thing from it until 10 min into the game. So I'm sure the question is "maybe you didn't hit anybody often enough". I hit 120 gold just off of the little 5g it will give you each time, even though this is a pretty boring bot lane for what I usually see, I think that is outrageous. Klepto is really important for ezreal early game for the mana pots especially and the fact it took so long before i even got anything really hurt my laning phase. All I'm trying to get at is every mastery has some kind of consistency to play around and klepto felt like it did too for the most part but that must have been buggy and needs to be fixed.