Why is a CameraActor module created when clicking simulate/play?

Unreal 4.2.1 & 4.3.1

When I click play/simulate I get a “CameraActor” module created. This appears in the outliner. When I stop playing/simulate the module disappears. Repeating this process seems to create a new CameraActor module each time with the number incrementing by 1 each time another is created.

This seems to be a problem when I’m using a camera module in the scene and I try to possess it, it always possesses the CameraActor module that’s created when I simulate/play.