Steps to reproduce:
Some of IDs might be too big for example if the setup was converted from Zabbix NODEs (2.2) to the latest ones.
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number/MAX_SAFE_INTEGER
if IDs more than 9007199254740991, so it might be issues like wrong lists members.

So this at least should be documented I suppose.