Hello.
I see you added Node: Isnage Farm (3495136722) on 3rd May 2015, quite close to Isnage Farm (507966898) which was added on 26th September 2009. I've noticed that, from time to time, you've added a "place=farm" or "place=isolated_dwelling" right next to an existing node with the same name. I've deleted the extra node in this case.

Fixed in changeset/29053634 and replied to Robert