It is possible to miss some events with an informer, it's not the case that we don't receive any event, it can happen that some events are missed, while a watch is restarted in an informer (and a re-list needs to be done, thus cannot continue from a resourceVersion).
To have a workaround and don't miss events, a periodic list might be possible to mitigate this.
see use case:
https://kubernetes.slack.com/archives/C0EG7JC6T/p1673376066590699
But this is quite a corner case.