Yes, as I linked to in my first post - Possible bug in v4.15.2-1 .
Then, David raised a ticket for me, but resolved it as the expected response. I was a bit flabbergasted, but had to accept it. I completely tidied up my Devices list but it has now happened again. IMHO, it must be a bug. How does a LAN interface end up with an extraneous internet IP attached to it in adamOne?