Why does zabbix trigger from the future work?

Question

Zabbix

The screenshot shows that according to the Zabbix agent on CLIENTB, the trigger is unreachable for 5 minutes occurred more than two hours ... in the future.
What could have caused this?
Yes, the real time of the occurrence of the trigger will pass and it will resolve.
I am using docker container from "zabbix/zabbix-server-mysql:4.0.5" under ubuntu 18.04.2 LTS. Accordingly, the time, the time zone did not change. Didn't do anything on the host. And this was, I thought that a one-time glitch occurred after the deployment of the system, but here it arose for the second time.