After zabbix-agent2 updating from 7.2.6 to 7.4.3 proc.num items sometimes return 0 or another wrong value instead actual processes number.

For example cron proceeses monitoring retrun return values "0" and "2" few times, but there is always single cron process running.

ps aux | grep cron
root        1058  0.0  0.0   4520  2740 ?        Ss   Aug20   1:14 /usr/sbin/cron -f -P 

Cron processes monitoring item key.

proc.num[,root,,cron] 

Items history graphs and item configuration screenshots attached.

Steps to reproduce:

1. Update to zabbix-agent2 7.4.3

Result:

proc.num items return wrong values

Expected:
proc.num items return correct values