Yes, that is correct! I Nothing is currently detected on that port (and the only thing I ever got to work on it was the OSMC hub with the drives, i.e. the remote dongle was never detected from day one).
Just to reenforce, the hub also doesn’t work on the USB2 port from some reason as I mentioned here. This goes for the OSMC one, as well as the new one I purchased to rule out a defective hub.
And yes, my drives are independently powered.