I want to filter in netflow table to get only entries with NO kube object match, ie. no namespace / no name / no kind. I couldn't find a way to do it, because filtering for empty values is rejected (cf screenshot) (I tried with exact and partial match)

I think we should accept empty values for filters, be it for name, namespace, kind, host, etc.

Side remark, I find the tooltip text misleading: "Not a valid kubernetes label" => makes me think it is filtering based on label, whereas it's actually by name. This is confusing.