[BUG] US admin level 4 boundary lines appear incomplete

[danw-mpl]

Describe the bug
I can't figure out why US admin level 4 boundary lines appear incomplete? Is this an issue with Planetiler or the source OSM data?

To Reproduce
Use a custom YAML schema. The problem happens with and without tile post processing, and is consistent with zoom levels.

schema_name: My Schema
schema_description: v0.1.2
attribution: <a href="https://www.openstreetmap.org/copyright" target="_blank">&copy; OpenStreetMap contributors</a>
sources:
  osm:
    type: osm
    url: '${ args.osm_url }'

layers:
- id: admin_boundaries
  features:
  - source: osm
    geometry: line
    min_size: 0
    min_zoom: 3
    include_when:
      __all__:
      - boundary: administrative
      - admin_level: [ 3, 4 ]
    attributes:
    - key: maritime
      type: boolean
    - key: admin_level
      type: integer
  tile_post_process:
    merge_line_strings:
      min_length: 1
      tolerance: 1
      buffer: 5

Expected behavior
The admin 4 lines should be complete.

Screenshots

Environment (please complete the following information):
Docker-based Planetiler (ghcr.io/onthegomap/planetiler:0.7.0)

[msbarry]

Very strange... What osm url are you running with?

[msbarry]

Ahh also one issue is that boundary ways get their admin level from relations since they may be the border of many admin regions at different levels. For example: https://www.openstreetmap.org/way/816355261.

Unfortunately yaml schemas don't support relations yet, planned in #351

[danw-mpl]

Gotcha, so a simple workaround could likely be including other admin areas?

Alternatively I was going to try getting the states as polygons from OSM places.

My source is aws:latest.