aws sdk – Awssdk in c++ ignores Legal Hold Locks of the MinIO s3 store

I have a object on a MinIO s3 Object Store and want to lock it with a Legal Hold so that I cannot overwrite it in c++.

I set the Legal Hold like that:

    Aws::S3::Model::PutObjectLegalHoldRequest request;
    request.SetBucket(bucketName);
    request.SetKey(manag_file_name);
    Aws::S3::Model::ObjectLockLegalHold lock;
    lock.SetStatus(Aws::S3::Model::ObjectLockLegalHoldStatus::ON);
    request.SetLegalHold(lock);
    auto outcome = minio_client->PutObjectLegalHold(request);
    if (!outcome.IsSuccess())
    {
        std::cout << "Error setting lock status: " << outcome.GetError().GetMessage() << std::endl;
    }

I overwrite the same file like that:

    Aws::S3::Model::PutObjectRequest in_request;
    in_request.SetBucket(bucketName);
    in_request.SetKey(manag_file_name);
    in_request.SetBody(in_stream);
    in_request.SetContentLength(in_mem_size);
    auto in_outcome = minio_client->PutObject(in_request);
    if (!in_outcome.IsSuccess())
    {
        std::cout << "Error: " << in_outcome.GetError().GetMessage() << " size: " << in_mem_size << std::endl;
    }

And I am successful, even though I locked the file!

I can also delete the file via the Awssdk, ignoring the Legal Hold. But if I try to delete the file in the MinIO Console I get a WORM error:

Object, ‘1_1_0’ is WORM protected and cannot be overwritten

So the Legal Hold is there but Awssdk kind of ignores it?