Where is the camera bubble placed?

The Camera Bubble setting has two modes. Recording burns the bubble into the video where you dragged it; Editor keeps the camera separate so you can move it later.

Recording mode

The bubble you see while recording is exactly what ends up in the video. Drag it into a corner before you start and it stays there. Good when you want the finished file straight away, with no editing.

Editor mode

The camera is recorded as its own track next to the screen. In the video editor you can move it, resize it, or hide it for a section. Good for polished demos. This mode stores the extra track in the browser's storage during the recording, so it needs the same free space as a second recording.

Changing the mode

Preferences, then Recording, then Camera Bubble. The setting applies to the next recording you start.