[Tile-serving] Mapnik renders labels for each exclave on lower zoom levels

[Roman Woessner]

Hi,

we currently have a question on rendering the openstreetmap-carto 
default style on our own server.
For countries and states having one or more exclaves, our mapnik renders 
multiple labels for these objects which results in a map similar to the 
following example of europe on zoom level 4:
http://i.imgur.com/Xylkzpu.png

Our tile serving setup is the following:
- Latest europe pbf in a PostgreSQL 9.3 and PostGIS 2.1
- Latest osm2pgsql (built from source) using the default import style
- Mapnik 3.0.9 (built from source) using the latest (24.02.16) 
openstreetmap-carto style
- Latest renderd and mod_tile (built from source)

In spite of using placement="interior" for these labels, the labels are 
not renderd as we would expect.

We have noticed this commit, which maybe is somehow related to our problem:
https://github.com/gravitystorm/openstreetmap-carto/commit/4da1443f8b44ee88dfa2b0dfc49562857b3de56e

Do you have any idea about the reason for this behaviour?

Cheers,
Roman

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Disy Informationssysteme GmbH
Roman Wössner, M. Sc. Geomatik
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E-Mail:roman.woessner at disy.net
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