Elasticsearch version: number": "5.1.1", "build_hash": "5395e21" from official Docker image

Description of the problem including expected versus actual behavior:

When I query the default mapping values using mapping API with ?include_defaults=true I'm getting the following for geo_shape field:

{
              "type": "geo_shape",
              "tree": "geohash",
              "tree_levels": 0,
              "precision": "-1.0m",
              "strategy": "recursive",
              "distance_error_pct": 0.025,
              "orientation": "RIGHT",
              "points_only": false,
              "coerce": false
 }

Above values do not match the default values mentioned in documentation:
https://www.elastic.co/guide/en/elasticsearch/reference/5.1/geo-shape.html#geo-shape-mapping-options

Here's the query result when I've added precision: 1m property to geo_shape mapping:

{
              "type": "geo_shape",
              "tree": "geohash",
              "tree_levels": 0,
              "precision": "1.0m",
              "strategy": "recursive",
              "distance_error_pct": 0.0,
              "orientation": "RIGHT",
              "points_only": false,
              "coerce": false
}

Still tree_levels is 0 (which is confusing). On the other hand distance_error_pct changes to 0 as documented.

Not sure if it's only docs out o date, because:

• tree_levels: 0 seems to be a bug
• precision: "-1.0m" by default does not make sense