QUIC protocol won't show on cloudflare-quic.com

It appears that cloudflare-quic.com has some problems with processing quic requests, http3 option enabled, however when running to main site, browser shows that blog-cloudflare-com-assets.storage.googleapis.com has quic support but not cloudflare.
Latest version of Firefox stable.

I’m not clear what product request you’re asking for here, but HTTP3/QUIC is paused on some zones until they iron out some bugs.