Unfortunately, it's causing below error logs in Browser Console. That's even for non-YouTube tabs.
view-source:moz-extension://my-local-UUID-here/scripts/background.js:16: "Unchecked lastError value: Error: Could not establish connection. Receiving end does not exist."
Also, the feedback form from the extension itself most likely doesn't work. In Browser Console it logs: 400 BAD REQUEST for https://api.mailgun.net/v3/sandbox..../messages.
