Thanks for the review. We are aware that some virus scanners have problems with the new addon architecture. I assume you already tried to add the addon in the list of exceptions? There should be a white list or something in your virus scanner.

A former Mozilla engineer suggested to disable virus scanners completely to increase browser security:
https://www.bleepingcomputer.com/news/security/former-mozilla-engineer-disable-your-antivirus-software-except-microsofts/ (2017)