Hey! actually, on the viewer in hestia, they’re back.
First step: “select enable remote control” from your grasshopper sender:
Second step: name your sliders! For them to appear in the browser, they need to contain “SPK_IN” in their name.
Third step: go to the controllers tab of your stream and hit “refresh”.
Finally: profit!
As a warning, it’s probably still buggy as I haven’t tested it properly yet.