text: yeah, this isn't a bug but two different mappers independently tracing the same thing on the same day.  no nodes in the same position, just almost co-located roads.
  
  i've seen HOT mappers be called out in changeset comments for such a thing, probably using the same tool that brought you here.
  
  weird the added node by vespax does not show in the history of the original line where both additions join.  i would think that there should have been a version number conflict causing upload problems or warnings.  then i've not checked which editors were in use, unlike a precisely co-located pair of ways like both earlier examples where i want to understand the why and how.  no need for that here, the why-not is what irks me.