http://www.techradar.com/news/you-can-add-unresponsive-screen-edges-to-the-list-of-pixel-2-xl-issues

It's not been the best of launches for Google and the Pixel 2 XL, with widespread reports of screen burn-in issues on new devices and users complaining about muted colors, both problems that Google is investigating. Now there's a new bug to add to the list: unresponsive spots near the edge of the screen.

As per a Pixel User Community post, some Pixel 2 XL owners have been noticing dead spots close to the bezels, specifically on the right-hand edge of the screen. There's also a video of the problem doing the rounds.