This is super simple, but I cannot find any reference to this situation. As I am modeling in Rhino 7, at some point this icon shows up (see screenshots below). I do not know how I am triggering it and cannot figure out how to turn it off. Looks like it’s related to camera view but seems a jumble of icons to me:
Oops, I figured it out after posting. It’s a “lights” icon that can be turned off under “General Settings” in the “Display” Panel. (Believe me, I searched for a while before posting and didn’t find anything.)