Attachment create event does not fire when attachment is created through Java

[Aamir Murtaza]

I hope someone is familiar with Atlassian SDK for Jira Server.

I try to catch an event when an attachment is added to Jira Issue. Here is my code listening to issue events:

@Component
public class IssueEventListener implements InitializingBean, DisposableBean {

    private static final Logger log = LoggerFactory.getLogger(IssueEventListener.class);

    @JiraImport
    private final EventPublisher eventPublisher;

    @Autowired
    public IssueEventListener(EventPublisher eventPublisher) {
        this.eventPublisher = eventPublisher;
    }

    @Override
    public void destroy() throws Exception {
        log.info("Disabling plugin");
        eventPublisher.unregister(this);
    }

    @Override
    public void afterPropertiesSet() throws Exception {
        log.info("Enabling plugin");
        eventPublisher.register(this);
    }

    @EventListener
    public void onIssueEvent(IssueEvent issueEvent) {
        Long eventTypeId = issueEvent.getEventTypeId();
        Issue issue = issueEvent.getIssue();

        if (eventTypeId.equals(EventType.ISSUE_CREATED_ID)) {
            log.warn("Issue {} has been created at {}.", issue.getKey(), issue.getCreated());
            System.out.println("issue created");
        } 
        else if (eventTypeId.equals(EventType.ISSUE_UPDATED_ID)) {
            log.warn("Issue {} has been updated (Attachment created/deleted at {}.", issue.getKey(), issue.getUpdated());
            System.out.println("issue updated");
        }

    }
}

Here is the code for attachment creation:

CreateAttachmentParamsBean attachmentParamsBean = new CreateAttachmentParamsBean.Builder(new File(path),
                filename, "text/plain", context.getLoggedInUser(),
                issue).build();
        ChangeItemBean bean = ComponentAccessor.getAttachmentManager().createAttachment(attachmentParamsBean);

This code adds an attachment to the issue, but the event is not fired and issue history does not show that attachment also. On the other hand, when I add an attachment through Jira issue page manually, the event is fired and history shows an attachment too. So what is the problem with this code? Thanks in advance