When having an object selected and turn on the isolation all nodes getting invisible as expected.
But all the visible camera targets getting visually hidden but not hidden in the scene.
If you then try to get only the visible objects in the scene you will always get also the camera targets.
Maxscript:
currentIsolation = for obj in Objects where not obj.isHiddenInVpt collect obj
print currentIsolation
Max 2025.3