javascript – Scrolling on webpage I’m working on works wonkly in Edge Beta and Edge Dev

Could someone explain to me, why the scroll wheel in Edge Beta and Edge Dev on this page works only when hovering over that white bar on the middle of a page?

It works fine on Firefox, Chrome, and stable version of Edge

I tried it on 2 PCs.

I didn’t overwrite the scroll event in any way, and used is only to create some parallax effect, because I wasn’t able to make it in CSS.

From what I tried it seems like the whole event isn’t thrown outside that bar and I don’t know if I did something wrong in some way or not

screenshot of a page