Reprex for elastic forum on post_filtering inner_hits

elas-reprex.txt

PUT temp
{
  "mappings" : {
    "properties" : {
      "people" : {
        "type": "nested",
        "properties" : {
          "age" : {
            "type" : "integer"
          },
          "name" : {
            "type" : "keyword"
          }
        }
      }
    }
  }
}

PUT temp/_doc/1
{
  "people": [
    {
      "name": "Alice",
      "age": 30
    },
    {
      "name": "Bernhard",
      "age": 40
    }
  ]
}
PUT temp/_doc/2
{
  "people": [
    {
      "name": "Carlos",
      "age": 50
    },
    {
      "name": "Dave",
      "age": 20
    }
  ]
}

GET temp/_search
{
  "query": {
    "nested": {
      "path": "people",
      "inner_hits": {}, 
      "query": {
        "match_all": {}
      }
    }
  }, 
  "aggs": {
    "people": {
      "nested": {
        "path": "people"
      },
      "aggs": {
        "ages": {
          "histogram": {
            "field": "people.age",
            "interval": 5
          }
        }
      }
    }
  },
  "post_filter": {
    "nested": {
      "path": "people",
      "query": {
        "range": {
          "people.age": {
            "lte": 25
          }
        }
      }
    }
  }
}