Infinity mirror effect with screen sharing
When sharing your screen, one common interaction is the so-called "infinity mirror" effect. This happens when you share your (entire) screen, and your Lessonspace space is open and visible in the screen share.
The reason this effect happens is that you're sharing the screen that's showing the shared screen which creates an infinite loop of screen shares. To prevent this, make sure that you move to another window or tab (so that the Lessonspace space isn't visible in the area you're sharing), or you can choose to share an application window or tab, just like this: