After upgrading to Kibana 7.16.2 I cannot create aggregation in Kibana based on nested fields

[Nicole_Hirshler]

Using Kibana 7.16.2 I'm trying to create new simple visualization as table, using aggregation based on nested field and it is not available for selection. Using Dev Tools I can search nested fields.
I use the simplest example from ELK documentation:

Create index:

PUT /drivers
{
  "mappings": {
    "properties": {
      "driver": {
        "type": "nested",
        "properties": {
          "last_name": {
            "type": "keyword"
          },
          "vehicle": {
            "type": "nested",
            "properties": {
              "make": {
                "type": "keyword"
              },
              "model": {
                "type": "keyword"
              }
            }
          }
        }
      }
    }
  }
}

Add document:

PUT /drivers/_doc/1
{
  "driver" : {
        "last_name" : "McQueen",
        "vehicle" : [
            {
                "make" : "Powell Motors",
                "model" : "Canyonero"
            },
            {
                "make" : "Miller-Meteor",
                "model" : "Ecto-1"
            }
        ]
    }
}

I can query

GET /drivers/_search
{
  "query": {
    "nested": {
      "path": "driver",
      "query": {
        "nested": {
          "path": "driver.vehicle",
          "query": {
            "bool": {
              "must": [
                { "match": { "driver.vehicle.make": "Powell Motors" } },
                { "match": { "driver.vehicle.model": "Canyonero" } }
              ]
            }
          }
        }
      }
    }
  }
}

But when I'm trying to see that field in Kibana, it simply doesn't show up

Any idea is appriciated.