Why is Vel'Koz permanently disabled in Poro King?

It was like this last year too, but I had always thought that was because Vel'Koz was extremely buggy and they didn't have time to patch it out before the mode went away. For those of you who don't remember, Vel'Koz's abilities were invisible and he caused screens to spontaneously flash blue. He was disabled shortly after.

But he's still disabled now. Why? Did Riot not fix the bug, or is the bug not the reason he was disabled?

EDIT: He's enabled now. Praise the hentai gods!