Tracking Event Handler missed an event to handle/persist to db

We have configured many tracking processors. When a command fired an event, all tracking event processors are handling it and persist the data.
We have noticed one tracking processor missing a few events in production (no data on the respective table), we are unable to replicate it in the local. The JPA repository isolation level is configured as READ_COMMITTED.

Any idea on why the data not persisted on that table? Thank you.

    @Timed(eventName = "CreateEmployeeEvent")
    public void on(CreateEmployeeEvent event) { CreateEmployeeEvent(event.getId(), ACTIVE));