Re: Does Classic Retweet for Twitter rely on Java?
Unfortunately, it takes longer for updates to make their way over to the main page, as Mozilla must first review them, a process which can take several weeks, sadly. :/
So, if you ever encounter an issue (e.g. when Twitter updates its site in a way that breaks the extension, as was the case here), it's always best to look for not-yet-officially-approved updates on the "versions" page.