The bug was initially described here: https://issues.redhat.com/browse/NETOBSERV-1026?focusedId=22409850&page=com.atlassian.jira.plugin.system.issuetabpanels%3Acomment-tabpanel#comment-22409850

When users have no flow in their accessible namespaces, in the console plugin, when triggering the namespace autocompletion for fitlers (e.g. via "Common namespace" filter), an error is displayed in a tooltip: "TypeError: t is null"