wss://api.hitbtc.com/api/3/ws/public does not work at all, returns 400 status code and closes immediately

Try connecting to wss://api.hitbtc.com/api/3/ws/public via https://www.websocket.org/echo.html to see what I mean.

Does v3 of the websocket api work yet? Or did they just write the documentation before it was implemented?

I can connect to v2 of the websocket just fine.

EDIT: I see v3 was only implemented last week... guess I'll wait???