Yeah that does seem to be the case. But I have read that some were having success so I gave it a go anyways...
I can't see me having much time for a while to give this another go, so i'll probably wait until i can roll back to UI5.
@canossa Sorry for the late response.
yeah, since is so compact and you can get it for relatively cheap I opted in for the NRF52.
For home automation, I merged MySensors with Domoticz and it works for months now.