Why does my HomeKit camera say it is “off” when it isn’t?

Occasionally, one of my HK cameras (a Logitech Circle View), will show as “off” in my Home app, when it is not in fact off. I can in fact confirm that the camera is not off by checking it in the Home app on a different platform (e.g. it shows as off in iOS but not on macOS, or vice versa).

Why would this be happening? Is this a known bug. Once a Home app is convinced that the camera is off there seems to be no way to convince it that it is on, shot of going home.