[MongoDB] Nested data is automatically set in the column

Hello.

Data source MongoDB step talk.

Display lost data (roles) in the field Proximity data is displayed.

{
    "collection": "users",
    "fields" : {
        "_id" : 1,
        "email" : 1,
        "roles": 1
    }
}

It was displayed in the project as shown below, but the column automatically becomes the roles.KEY name.

{
    "collection": "users",
    "aggregate": [
        {
            "$project": {
                "_id": "$_id",
                "email": "$email",
                "roles": "$roles"
            }
        }
    ]
}

Probably it was supported by this PR（ Close #1199: support for nested fields in MongoDB results by arikfr · Pull Request #2304 · getredash/redash · GitHub ）, but I would like data like the image below (previously such results were returned in fields).

Is there any solution?