Sometimes when going to "Diagnostics/Sockets" and creating a subscription, the existing connections doesn't correctly update, because the server has still not yet created the connection for some reasons. I am not sure why this happens, but I assume there is something in SignalR not having completely created the connection quite yet as we create the connection in our Magic code.
To accommodate for this, I have added a wait 500 millisecond parts after creating a subscription in the dashboard before I retrieve the existing connections again from the backend, since otherwise it becomes impossible to actually send messages to the connection unfortunately.
Sorry about that ...