When i upgrade zabbix from 3.2.3 (ubuntu 14.04) to 3.2.4 (ubuntu 16.04), i found two strange situations: alerts does not send and custom lld rules does not work. I have not problem with lld on 3.2.3 zabbix-proxy, only on 3.2.4.
The reason were CR symbols in text data.
Only when i removed all CR from all text fields in zabbix database and from custom lld results, zabbix work seems to be normal.
This is bug, or "pain feature"?