Enabling Stellar.js on mobile layout gives scrollable margin to the right side of screen

[TomVDH]

Hello.

I'm at a loss. I've literally tried everything I can think of to help remedy this to no avail.

If you resize my current site (WIP) to a mobile layout, you'll see there's a margin to the right that stays there. On an actual Android handset, this is the same. (www.tomvdh.be)

I'm using Lity and Slick for slideshows/lightboxes on the same page. If I disable Stellar.js, the margin goes away.

What gives?