The features, settings and emotes are great. You can also add more features using Add-Ons. The only downside are very rare situations where no new update to this extension exists, which is compatible to the newest browser update.
I'm wishing for a feature giving a browser notification in case a channel (on Twitch) got raided. Would make moderating multiple channels a little bit easier.

Anyway, thanks for the extension!

На данный момент основные функции работают хорошо, но есть куча мелких ошибок которые создают дискомфорт при работе с Твичом.

No need to wait around for the Firefox update—just use the Greasemonkey userscript version instead!

I 100% agree that this is the best extension for Twitch hands down "when it works". I wish Twitch had the compressor natively for example. However, I find myself using the Userscript/Tampermonkey combo somewhat regularly. The FFZ Dev/team is quick to at least start looking into issues and getting fixes out as quickly as they can though, can't ask much more than that. Like others have pointed out, almost always, Firefox is the one being the slow party.

Would be 5* but it would be nice to be able to control emote size manually :D. Also i doubt it but is there a way to be able to resize chat like a windows window?

Ever since I've had to re-add the add-on it doesn't work. Even after removing and adding it again. Repeatedly.

EDIT: The issue has since been resolved. I also appreciate the feedback.

Why is the latest update not being shared?

Mute on middle-click doesn't work half of the time, scrolling instead