text: i puzzled over this some time back.  i think the cycle/transport map may sometimes also  take a label position from the polygon centre.  if so, i suspect the polygon is so large that i could not guess its centre and i'd have to zoom in much more to see anything, like z15 rather than z10.
  
  does a boundary need an admin level to even appear at all here?  seems some levels are not rendered.  just thought of that now, while earlier i could not gather firm rules for the label/place node out of the wiki.
  
  no obvious non-rendering geometry issues leap out at me.