Pretty much as the title says. Not sure if they're disabled as I haven't been able to change mine no matter what image I use or how long I wait

hit CTRL and F5 I think then it'll show

Still nothing :( even tried manually rescaling it to 16x16

They're disabled site-wide at the moment because of a bug. I have some idea what causes it and hope to help fix it.

well, favicons are still used on profiles' "moderator of" list. so setting one still has a purpose.