I'm using vanilla FF v139.0.1 and the twitch part, no yt or kick. The Plugin does exactly what it should. I just found a few bumps on the road. The plugin doesn't do anything after FF started, I have to open the Plugin UI at least once (in Chrome it works directly). I set up the plugin to 2 streams max, but from time to time I open a third stream on my own and the plugin starts to steal that as well and navigates to my third favorite, so I have to disable the plugin for that time.
The rest works great!

this is a very useful add-on, especially for drops. It works great for me, but occasionally I have to click refresh within twitch lurker. I give it 5 stars because I've been using it for so long, and it works for the most part

Works perfectly, wonderful extension to support streamers you follow. I'm wondering, is there any possibility of extending this to lurk categories, so that when all followed streamers are offline it will lurk someone from a set category if available? I'm not sure if this is even possible or beyond the scope of the extension, it would be helpful with small categories that not many people stream to. Whether or not this can or would be added, cheers for such a helpful extension.

Excellent. I haven't been able to get opening the tab in the background to work (stream doesn't start playing), but opening in the foreground works. I might have a conflict with another extension or just be missing something for the background option.

Funziona alla grande, apre automaticamente e in silenzioso il twitcher da lurkare, senza danni e senza problemi