Reporter: oba510
[Submitted to the original trac issue database at 5.16am, Monday, 5th November 2012]

See here for an example:

[http://www.openstreetmap.org/?lat=37.88179412484169&lon=-122.3072612285614&zoom=18]

The way representing the boundary for the city of Albany, which is being rendered by Mapnik, has a small gap, while the adjacent city of Berkeley boundary is closed. When I close the gap, Albany's borders disappear from the map. It appears that non-closed ways and closed ways that are part of relations are being rendered, but closed ways without relations are not.