Weird behaviour for multiple type charts with two yaxis

Hello everyone,

I’m trying to understand why a mix of scatter and bar chart doesn’t work properly if you use two different yaxis for it. I think I’m missing something small here but for some reason I can’t wrap my head around it.

Here’s an example: https://codepen.io/anon/pen/ePjqbv

EDIT: Nevermind… duh. I had to use “overlaying”. I tried to use “overlay” but alas that was wrong.