My node-red editor has been displaying node status for years. Now it doesn't. I checked to be sure the display node status option was turned on. Old status messages still appear one some nodes. I know the flow where they don't display is working because it turns on lights, sends a message, etc. If I click on the hamburger icon in the editor, it say version 2.2.2 at the bottom. I just did a major Ubuntu upgrade today and restarted Node-red, which is running in Docker. I wouldn't think the Ubuntu upgrade would have any effect.
I also noticed that debug messages don't appear in the debug messages window either. I made a simple flow of a inject node connected to a debug node. When I click on the inject, it says 'Successfully injected'. The debug node is enabled and set to display to the debug message window. Nothing appears.