We have double-checked everything on our end and found no reason for the real-time stream to stop. The rt data doesn't come from the Bitfinex API. We started requesting the updates from the API to emulate real-time feed. Charts are updating now, but they are slightly delayed.
Tue, 12 Dec 2017 14:27:57 GMT
Bitfinex confirmed the issue: https://twitter.com/bitfinex/status/940588829278457857