Rudder

Plenty of nodes which did not sent an inventory or reports for a long period of time were listed in red in the List Nodes page instead of grey.

All the nodes concerned had the message in the 'compliance report' tab saying that they were sending reports for an old configuration (even if they had not send anything in weeks/months).
Our guess is that the red color has priority over the grey color when the last report sent was based on an outdated configuration, so the node get stuck on red forever until it respond again.