I've missed that too lately. It seems like literally everything was demolished. If I could "upgrade" back to 8.1 I'd do it without hesitation. v9 has added nothing useful and removed or downgraded nearly everything else.
To answer your question, I don't think their devs have any kind of QA or testing process, it's just slap something together and let end users tell them what sucks or broke.
To answer your question, I don't think their devs have any kind of QA or testing process, it's just slap something together and let end users tell them what sucks or broke.