Steps to reproduce:

1. A "net.tcp.port[183.3.224.149,443]" monitoring item is configured in the host.
2. If IP address 183.3.224.149 is unreachable from the network, the agent cannot obtain data and the agent.ping alarm is triggered.However, using zabbix_get agent is available to obtain the value of other monitor items.
3. zabbix client version

Result:

cat /var/log/zabbix/zabbix_proxy.log 
 50618:20221108:004304.928 Zabbix agent item "net.tcp.port[183.3.224.149,443]" on host "11.99.2.30" failed: first network error, wait for 15 seconds
 50633:20221108:010454.893 resuming Zabbix agent checks on host "11.99.2.30": connection restored
 50633:20221108:010524.896 Zabbix agent item "net.tcp.port[183.3.224.149,443]" on host "11.99.2.30" failed: first network error, wait for 15 seconds
 50633:20221108:011454.939 resuming Zabbix agent checks on host "11.99.2.30": connection restored
 50630:20221108:012625.828 Zabbix agent item "net.tcp.port[183.3.224.149,443]" on host "11.99.2.30" failed: first network error, wait for 15 seconds
 50630:20221108:014655.946 resuming Zabbix agent checks on host "11.99.2.30": connection restored

Expected: