Wrong nullable behaviour

[hotrush]

When using openapi: OA\OpenApi::VERSION_3_1_0 properties have wrong types and nullable values.

new OA\Property(
    property: 'field',
    title: 'Field',
    type: 'string',
    nullable: true,
)

Produces

"field": {
    "title": "Field",
    "type": [
        "string",
        "null"
    ]
},

Expected

"field": {
    "title": "Field",
    "type": "string",
    "nullable": true
},

[DerManoMann]

Your expected example is how version 3.0.0 works.

In version 3.1.0 schemas are defined as

The Schema Object allows the definition of input and output data types. These types can be objects, but also primitives and arrays. This object is a superset of the [JSON Schema Specification Draft 2020-12](https://spec.openapis.org/oas/v3.1.0.html#bib-json-schema-2020-12).

The JSON schema then decribes how type is an array which may also contain "null".

Why do you think this is wrong?