Why is right-aligned side bar not staying open?

not sure it’s a bug or a feature, but if make a sidebar menu on the left, it stays open if I specify a screen size, but if I do the same with a right sidemenu it doesn’t work.

Basically, this works

<ion-side-menu side="left" expose-aside-when="large">

This doesn’t

<ion-side-menu side="right" expose-aside-when="large">