Give it a few seconds, it might not be there right away, but it keeps scanning while you have the selectbox open (as indicated by the progress indicator moving).
I have developed this on Windows, so that's the only place I've been able to test it. What system are you on? You could try to open the vscode developer tools (Toggle Developer Tools from the command palette) and see if there is anything there.
Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
Give it a few seconds, it might not be there right away, but it keeps scanning while you have the selectbox open (as indicated by the progress indicator moving).
I have developed this on Windows, so that's the only place I've been able to test it. What system are you on? You could try to open the vscode developer tools (Toggle Developer Tools from the command palette) and see if there is anything there.