This feature allows speakers and broadcasters to preview what they are sharing
Curious to see how your screen appears for other meeting participants? If you would like to preview what they are seeing when you share your screen, simply click the blue "click here" link that appears on your screen.
Note: an "infinite mirror effect" can is created when previewing the application window or entire desktop screen shares. This is not “broken,” just an artifact of sharing a screen back to yourself, like standing between opposing mirrors.