The "Mobile App (Xamarin Forms)" project in Visual Studio 2019 does work with a Pixel 4 device. I created a new project, built the apk file, copied the apk to a Pixel 4 device and installed it. The app launched but the refresh view in the items page rendered blank. I was able to click on a blank item in the refresh view and navigate to the item detail page but the name and description were also blank.
Is the Pixel 4 support or is this a bug in the default project?