Sorry, but I haven't experienced that before. Are you sure that the error only ever occurs when the listener is another tab on the same browser? I don't know whether it would help, but the demo video I have at the beginning of the article is using 2 different web browsers. Are you running the application locally, or is it deployed to the web? Does the error display in the browser, or in the terminal console, or in the deployment logs? Does the error stop the entire system from functioning? Are you solely broadcasting your voice when the error occurs, or does the error also occur when you stream music and then switch to broadcasting your voice? Could you upload a screenshot of the full error to imgbb.com for me to look at?