"Kiosk Mode" in PWA on Android?

Question

I'm creating a PWA site and I have a task to hide virtual buttons and android's status bar when the PWA application is open, so that there is no way to exit the application except with the built-in "Exit" button.

I found quite an old resource about "kiosk_enabled" and "kiosk_only" in manifest.json but it doesn't work in the current (85) version of Google chrome (status bar and virtual buttons are not hidden).

developers.google.com/web/shows/google-io/2014/unleash-the-power-of-kiosk-apps

Is this functionality still working , and if so, how can I properly enable it in PWA?