It seems like with Spring Boot 4.0 it became impossible to perform checks agains null values.

Example:

path("$.data.testConnection.edges.*.sortIndex").entityList<Number>().containsExactly(null)

The data for this is:

{
  "data": {
    "testConnection": {
      "edges": [
        {
          "sortIndex": null
        }
      ]
    }
  }
}

The field sortIndex is defined as

sortIndex: Int

Is this not possible anymore?