With Android 9.0 (Pie), Google revamped its navigation paradigm, reworking the multi-tasking and app-switching interface into a more gesture-based UI. On most devices running Android Pie, the old, three-button interface could be reactivated easily via a toggle found in the settings app.
This won't be the case with Google's fresh-off-the-oven Pixel 3 handsets, however. In a tweet, the company confirmed that the option to turn off gestures won't be available for buyers of the device, leaving them stuck with the new gesture-nav interface.
Though this new UI was expected to be the default paradigm on Google's new smartphones, it's sure to be a disappointment for those who prefer the older, decidedly simpler button-based interface.
Source: Google (Twitter)