Does Micronaut support mapping of @Part argument to object?

[DKolibar]

Hello, I defined method for receiving multipart form data containing entity data as JSON and file for this entity in my controller:

@Post(uri = "/new, consumes = MediaType.MULTIPART_FORM_DATA, produces = MediaType.APPLICATION_JSON)
public HttpResponse<Entity> createNewEntity(
  @Valid @Part Entity newEntity,
  @Part CompletedFileUpload fileForEntity
) {
...
}

Then when I send request to this endpoint using curl (or other http client, this doesn't matter):

curl --request POST \
  --url http://api/new \
  --header 'Content-Type: multipart/form-data' \
  --header 'tenantId: ssokpifeitukeskrealmstesting_ssam' \
  --form 'newEntity={"name": "fooo"}' \
  --form 'fileForEntity=@foo.txt'

I receive this error from Micronaut: "Required Part [newEntity] not specified".

I found this post on stackoverflow with same issue: https://stackoverflow.com/questions/75209784/micronaut-does-not-map-an-object-in-a-multipart. There is suggestion to use String instead of object and then use ObjectMapper. But I still want to ask you for clarification.
Is this bug? Or Micronaut just doesn't support mapping to object for multipart form request.

Thanks