"matched_queries" does not include queries within a wrapper query

[tstibbs]

I have a document in an index such that the following request returns a match, with the matched_queries element containing query1:

curl -XPOST 'http://localhost:9200/index/_search' –d '
{
  "query": {
    "match": {
      "stuff": {
        "_name": "query1",
        "query": "blah"
      }
    }
  }
}
'

However, if that query is wrapped in a wrapper query, then the name does not appear in the list of matched_queries:

curl -XPOST 'http://localhost:9200/index/_search' –d '
{
  "query": {
    "wrapper": {
      "query": "eyJtYXRjaCI6IHsic3R1ZmYiOiB7Il9uYW1lIjogInF1ZXJ5MSIsICJxdWVyeSI6ICJibGFoIn19fQ=="
    }
  }
}
'

I am using the java api and the WrapperQueryBuilder, but the effect is the same whether using the java api or the rest interface.

(gist with set-up steps in case it's useful: https://gist.github.com/tstibbs/645e01c5dcdfa9d2a193)