This problem has me stupified.

I have a camera and it's aiming target both on motion path curves.

I also have a spotlight with volume lighting on.

During the travel of the camera and it's aim target, it moves around the spotlight and it's volume cone.

For some reason, the light completely turns off. No light, no shadows, no light fog. It stays off for 15 frames, then comes back on again.

Yet, when I use or create another perspective camera, with all the same attributes of the one on the motion path, and place it at a similar angle and point, and at the same frame, the light is rendered as on and normal.

But when I place that created camera and it's aim target on the same motion paths with the same keyframes, the light turns itself off again.

Why would one perspective camera show the light being on, and another perspective camera show the light as being off, when the only thing different between the two is the exact angle and point of the cameras?