Multi_match query for boolean fields is not work

[vara855]

Describe the feature: Multi_match query for boolean fields is not work

Elasticsearch version : 6.2.3

Plugins installed: [elasticsearch-carrot2(6.2.3)]

JVM version (java -version): 1.8.0_151

OS version (uname -a if on a Unix-like system): win 10

Description of the problem including expected versus actual behavior:
multi_match query for boolean index fields is not work.
If index have sample structure:
"_index": "index", "_type": "_doc", "_id": "1", "_score": 1, "_source": { "my": { "boolean": true, "text": "foo bar" } } }
AND query is
GET index/_search { "query": { "multi_match": { "query": true, "fields": [ "my.*boolean"] } } }

AR: request does not find docs
ER: request should find docs with field "boolean": true

Steps to reproduce:
1.DELETE index
2. PUT index/_doc/1 { "my": { "boolean": true, "text": "foo bar" } }
3. GET index/_search { "query": { "multi_match": { "query": true, "fields": [ "my.*boolean"] } } }

[jimczi]

Closing as duplicate of #31798 . Thanks for reporting @vara855