- start Arma3 no Mods
- open editor
- create Camera_F element
- create any unit shooter (important)
- mission start
- return to the editor
- access the Camera_F element, try to see the image window from the camera
- remove the Camera_F element
- create the Camera_F element, try changing the position of any element in the editor field or your look at the editor field
P.S. (* important) if there is no Unit in the editor, any work in the editor with Camera_F will not return the focus window of the camera, but deleting and creating a new camera does not block control in the editor.