We had a participant in the Big Data class with a corporate laptop that had websockets disabled. As a result, whenever they tried to run a shiny application from RStudio Server Pro, the UI would briefly render, then grey out as if the session had disconnected (which it had). I don't think there's a workaround for this, but it's good to be aware of this behavior for future conferences / workshops.
We had a participant in the Big Data class with a corporate laptop that had websockets disabled. As a result, whenever they tried to run a shiny application from RStudio Server Pro, the UI would briefly render, then grey out as if the session had disconnected (which it had). I don't think there's a workaround for this, but it's good to be aware of this behavior for future conferences / workshops.