Every once in while when a map refreshes the nodes will turn gray or show up with a gray overlay. The tooltip says:
Orion.Nodes: #
Object status is Unknown
This started happening after version 10 upgrade.
Orion.Nodes: # is a sign of that the node has been removed from the database. Can you check what happened to the nodes?
Well nothing actually happens to the node in the database. The node is still there and should still be polled. After a few refreshes the map usually corrects itself by showing the status once again. It's always just the nodes though, because links to maps still show up green.
This seems like a caching/concurrency issue. Is this 9.5.1 or older?
Oh, I see it's 10. Would you mind opening a support ticket and mentioning this thread there? Thanks