When using _AMQ_SCHED_DELIVERY, the message order is incorrect if the consumer is connected late

Issue

    - When using _AMQ_SCHED_DELIVERY, the message order is incorrect if the consumer is connected late. Is this expected behavior? or bug?
         - For example to reproduce the problem:
             1. Send messageA with "_AMQ_SCHED_DELIVERY = currentTime + 5s"
             2. Send messageB with "_AMQ_SCHED_DELIVERY = currentTime + 10s"
             3. Wait for 20s (message A and B will be able to be consumed from the queue)
             4. Connect with the consumer to consume the messages
                 => The order of message retrieval is: message B and then message A
         - FYI, of course, if the consumer has been connected to the broker before the messages were sent, the messages can be retrieved in the correct order.
- In AMQ Broker 6, the messages with AMQ_SCHED_DELIVERY were message A and then message B order.