One of our clients has reported unusual behavior while using this extension to track / develop a website and the associated webapp.
Seems like the extension has been modified to inject tracking [that’s the least we found out from our quick investigation]. A part of the code used can be found here:
https://gist.github.com/mala/e87973df5029d96c9269d9431fcef5cb
We recommend anyone using this extension to uninstall it and carefully investigate.