Links don't work with Slide-in

I'm not sure if it is a theme conflict, or by design, but when a slide-in message comes up on my homepage, the links on the page stop working. This means a visitor cannot ignore the slide-in, but at the same, probably won't understand why the links are working if they do ignore it.

Update: I think this is a bug. Links that are in line with the slide-in horizontally, don't work. Links above and below the horizontal area where the slide-in appears work. Changing the full width setting seems to have no impact on it. It's like there is an invisible layer over the website extending across from the slide in that interferes with the site. Is this a z-index issue, or something else?

You can see it here: