text: good lord.  i am either drunk again or the similarity between the month names juni and juli made me think the commit was made to master yesterday morning.
  
  o how i long for the days of pivo, červen a červenec.  oooh, bad example.  guess in the traditional heat (lacking at the moment) it does not matter.
  
  in any case, with the next mapnik update even these labels will disappear.  the reason for this apparently has to do with islands, but i wonder (with no interest to learn an overpass turbo query) how many administrative boundaries are mapped as ways like this.
  
  the simplest solution would be to add this way into a single-member relation, but then, i'm sure some qa tools would want to simplify that due to the additional processing requirements dealing with relations where not needed in theory.
  
  of course by adding a label node in a suitable place, this will of necessity become a rendered relation.  i hope iD can handle such a simple concept after seeing it destroying relations in your area of mapping, but before the next versioned push from master to osm, this would be my suggestion to aid boundary as well as label rendering here (and in the other area you mentioned earlier)