Wrong Queue in DM

Japan:

On [Monitoring] - [Queue], Queue count is not correct.
On the MasterNode, I find the Queue of [ZABBIX agent].
?More than 5 minutes] was 227 on [Details].
I thought that ChildNode had the queue of agent.
But There is no queue on ChildNode.

I think the summation of queue count must be incorrect.
Please check it.