Zabbix-agent2 send discontinuous data when one of the zabbix servers stopped.

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zabbix-server v5.02
zabbix-agent2 v5.01
zabbix-agent v4.2.8

We have two zabbix servers:

zabbix.companyname.com
zabbix-test.companyname.net

and we have several zabbix-agent2, and many zabbix-agent v4.2.8


/etc/zabbix/zabbix_agent2.conf

PidFile=/var/run/zabbix/zabbix_agent2.pid
LogFile=/var/log/zabbix/zabbix_agent2.log
LogFileSize=0
Server=127.0.0.1
ServerActive=zabbix.companyname.com,zabbix-test.companyname.net
Include=/etc/zabbix/zabbix_agent2.d/*.conf

/etc/zabbix/zabbix_agent2.d/ZabbixHostname.conf

Hostname=aws-support-test

/etc/zabbix/zabbix_agent2.d/ZabbixHostMetadata.conf

HostMetadata=cf2d950bab53770xxxxx

When we shut down zabbix-test.companyname.net the zabbix-agents2 begin to send discontinuous data.
zabbix-agents still work properly.

After restart zabbix-agents2 its begin to working properly too.


timestamps:
11:20 - zabbix_agent2 stopped.
11:21 - run zabbix-test.companyname.net, then run zabbix_agent2
11:38 - zabbix-test.companyname.net stoped
12:20 - restart zabbix_agent2