Component monitor shows as "down" when supposed to be "not running". Anyone seen similar issues?

Additional evidence:



Compare with another, good node:


See how when the "bad" one is "down", the "good" is actually "running"? "Bad" shows as "running" when the "good" one shows as not?
Component's CPU load is at zero in the last couple days when the good nodes show good work. They work more or less in parallel: running together, idle together.


This appears to have started happening just recently and out of the blue: no known changes to the nodes or Solarwinds.

Appreciate any ideas.