deleted stats are not updated when running delete by query in Elasticsearch 1.1.0

delete_by_query_stats.sh

#!/bin/sh

echo
echo '==========================='
echo 'Creating an empty index'
echo '==========================='
curl -XDELETE localhost:9200/test
curl -XPOST localhost:9200/test/ -d '{"settings": {"index.number_of_shards": 1}}'

echo
echo '==========================='
echo 'Index a document and delete it by ID'
echo '==========================='
curl localhost:9200/test/test/1 -d '{"foo":"bar"}'
curl -XDELETE localhost:9200/test/test/1

echo
echo '==========================='
echo 'Stats are updated'
echo '==========================='
curl -s 'http://localhost:9200/_stats?indexing=true&pretty' | grep 'delete_' | head -3

echo
echo '==========================='
echo 'Index a document and delete it by query'
echo '==========================='
curl localhost:9200/test/test/1 -d '{"foo":"bar"}'
curl -XDELETE localhost:9200/test/_query?q=*:*

echo
echo '==========================='
echo 'BUG! Stats are NOT updated'
echo '==========================='
curl -s 'http://localhost:9200/_stats?indexing=true&pretty' | grep 'delete_' | head -3