From github: https://github.com/mozilla-mobile/focus-android/issues/6482.

Tried using the https://airhorner.com/ PWA from https://connorjclark.github.io/pwa.rocks/ and saw that:

• there is no "Install" option in the menu but a "Add to Home screen" option - https://github.com/mozilla-mobile/focus-android/issues/6480
• the PWA icon is not correcly shown when installing it or on homescreen
• the toolbar does not behave properly:
  • before installing there is a toolbar sized gap at the bottom of the webpage - https://github.com/mozilla-mobile/focus-android/issues/6481
  • after installing Focus does not respect the "standalone" display property.

https://user-images.githubusercontent.com/11428869/154947988-dd011219-43f8-4e8a-ba2a-5f2bf2abd8e1.mp4

Change performed by the Move to Bugzilla add-on.