OpenAPI shows string as default value for string in sort field of pageable

Question

OpenAPI shows string as default value for string in sort field of pageable, why is the default being set to value "string" for "sort". Since we would prefer that end users don't set a value for Pageable while executing calls via the Swagger UI console

{
  "page": 0,
  "size": 1,
  "sort": [
    "string"
  ]
}