I joined a private channel on my RAK 3461 device and started to see pings and responses in the private channel. I first thought there might be a key duplication (which should be very rare if possible at all). But after the private channel owner rotated the key, still the same. The device does not follow any other channels except the default Public channel.

As far as i can tell so far, the leak does not happen on Liams meshcore app. Hence i guess it might be a bug in this app.