Using the 'blink' action, I have noticed that it will show the item even though the item's renderer's is off. Look at the pictures. You can see a tank which has its renderer on. At the same location is a plane that has its renderer off(but activated to keep the same rotation as the tank.). Do you see the blue at the top left? This is plane. The plane has 4 parts, and this parts blinks. It is the landing gear of the plane that is blinking. So When you use the 'blink' action, it shows even though the renderer is off.