Elasticsearch geo field causing query parser failure for index which doesn't have that field

gistfile1.js

curl -XPUT localhost:9200/test1 -d '{
	"settings": {
		"number_of_shards": 1,
		"number_of_replicas": 0
	},
	"mappings": {
		"type1": {
			"properties": {
				"geofield": {
					"type": "geo_point"
				}
			}
		}
	}
}'

curl -XPUT localhost:9200/test2 -d '{
	"settings": {
		"number_of_shards": 1,
		"number_of_replicas": 0
	},
	"mappings": {
		"type1": {
			"properties": {
				"another_field": {
					"type": "string"
				}
			}
		}
	}
}'

curl -XPOST 'http://localhost:9200/_aliases' -d '
{
	"actions": [
		{
			"add": {
				"index": "test1",
				"alias": "alias1"
			}
		},
		{
			"add": {
				"index": "test2",
				"alias": "alias1"
			}
		}
	]
}'

curl -XPUT 'http://localhost:9200/test1/type1/1' -d '
{
	"geofield" : [0, 50]

}'

curl -XPUT 'http://localhost:9200/test2/type1/1' -d '
{
	"another_field" : "blah"
}'

// the following queries return one doc each (which is correct) but the first also returns some errors 

curl -XPOST 'http://localhost:9200/alias1/_search' -d '
{
	"query": {
		"constant_score": {
			"filter": {
				"geo_bounding_box": {
					"geofield": {
						"top_left": [
							-179,
							89
						],
						"bottom_right": [
							179,
							-89
						]
					}
				}
			}
		}
	}
}'

// returns the following:

{
  "took" : 2,
  "timed_out" : false,
  "_shards" : {
    "total" : 2,
    "successful" : 1,
    "failed" : 1,
    "failures" : [ {
      "index" : "test2",
      "shard" : 0,
      "status" : 400,
      "reason" : "SearchParseException[[test2][0]: from[-1],size[-1]: Parse Failure [Failed to parse source [{\n\t\"query\": {\n\t\t\"constant_score\": {\n\t\t\t\"filter\": {\n\t\t\t\t\"geo_bounding_box\": {\n\t\t\t\t\t\"geofield\": {\n\t\t\t\t\t\t\"top_left\": [\n\t\t\t\t\t\t\t-179,\n\t\t\t\t\t\t\t89\n\t\t\t\t\t\t],\n\t\t\t\t\t\t\"bottom_right\": [\n\t\t\t\t\t\t\t179,\n\t\t\t\t\t\t\t-89\n\t\t\t\t\t\t]\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t}\n}]]]; 
          nested: QueryParsingException[[test2] failed to find geo_point field [geofield]]; "
    } ]
  },
  "hits" : {
    "total" : 1,
    "max_score" : 1.0,
    "hits" : [ {
      "_index" : "test1",
      "_type" : "type1",
      "_id" : "1",
      "_score" : 1.0, "_source" : {"geofield":[0,50]}
    } ]
  }
}

curl -XPOST 'http://localhost:9200/alias1/_search' -d '
{
	"query": {
		"match": {
			"another_field": "blah"
		}
	}
}'

//returns the following:

{
  "took" : 3,
  "timed_out" : false,
  "_shards" : {
    "total" : 2,
    "successful" : 2,
    "failed" : 0
  },
  "hits" : {
    "total" : 1,
    "max_score" : 0.30685282,
    "hits" : [ {
      "_index" : "test2",
      "_type" : "type1",
      "_id" : "1",
      "_score" : 0.30685282, "_source" : {"another_field":"blah"}
    } ]
  }
}