When you have a device with an 18:9 aspect ratio displays, chances are you’d want to watch videos on it in all its full-screen glory. But a lot of videos, of course, use the 16:9 format so there are black bars around your screen so it can be sometimes distracting. YouTube solved this issue by allowing users to pinch-to-zoom during their last update. Unfortunately, it was only for the Pixel 2. But now, a minor update to version 12.44 has added support for the gesture to other devices as well.

Android Community

As great as this is I hope Google is not pushing out to many app updates too fast.