Schema definition Types error when property type is an array of another schema

[ahmednaser94]

Do you want to request a feature or report a bug?
bug

What is the current behavior?
the schema definition must match EXACTLY as the interface in case of array

It does not complain when it is array like this, but if it was an object with type: [HistoryUpdateRecordSchema] it gives type error!!

Type '{ type: Schema<HistoryUpdateRecord & Document<any>, Model<HistoryUpdateRecord & Document<any>>, HistoryUpdateRecord>[]; default: undefined; }' is not assignable to type 'SchemaDefinitionProperty<Pick<Pick<_LeanDocument<HistoryUpdateRecord>, "fieldName" | "oldValue" | "newValue">, "fieldName" | "oldValue" | "newValue">[]>'.
  Types of property 'type' are incompatible.
    Type 'Schema<HistoryUpdateRecord & Document<any>, Model<HistoryUpdateRecord & Document<any>>, HistoryUpdateRecord>[]' is not assignable to type 'string | Function | Pick<Pick<_LeanDocument<HistoryUpdateRecord>, "fieldName" | "oldValue" | "newValue">, "fieldName" | "oldValue" | "newValue">[]'.
      Type 'Schema<HistoryUpdateRecord & Document<any>, Model<HistoryUpdateRecord & Document<any>>, HistoryUpdateRecord>[]' is not assignable to type 'Pick<Pick<_LeanDocument<HistoryUpdateRecord>, "fieldName" | "oldValue" | "newValue">, "fieldName" | "oldValue" | "newValue">[]'.
        Type 'Schema<HistoryUpdateRecord & Document<any>, Model<HistoryUpdateRecord & Document<any>>, HistoryUpdateRecord>' is missing the following properties from type 'Pick<Pick<_LeanDocument<HistoryUpdateRecord>, "fieldName" | "oldValue" | "newValue">, "fieldName" | "oldValue" | "newValue">': fieldName, oldValue, newValue

If the current behavior is a bug, please provide the steps to reproduce.

https://gist.github.com/ahmednaser94/5a6288614fa29eea30f15a7ee1a42a22

---

{
  "compilerOptions": {
    "target": "ES6",
    "module": "CommonJS",
    "outDir": "dist",
    "removeComments": true,
    "esModuleInterop": true,
    "allowSyntheticDefaultImports": true,
    "resolveJsonModule": true,
    "moduleResolution": "Node",
    "sourceMap": true,
    "typeRoots": ["@types", "./node_modules/@types"]
  },
  "include": ["src"],
  "exclude": ["test", "node_modules"]
}

What is the expected behavior?
It should not complain about type as any other property

What are the versions of Node.js, Mongoose and MongoDB you are using? Note that "latest" is not a version.

"typescript": "^4.1.5",
 "mongodb": "^3.6.4",
 "mongoose": "^5.11.17",