Unfortunately this extension no longer works since Microsoft changed their primary domain to teams.cloud.microsoft [v1.0.2].

Hopefully mcarr823 can add this domain to the permitted list!

Doesn't work

I found this cause with moving to web based Teams, it constantly shows you are away if you're mouse isn't directly on the tab. This allows you to continue to work on other tabs/screens without the concern of the boss thinking you're off doing whatever when he see's your yellow.