Does anyone know exactly what it is that causes some teleporters to lose the glowing, hour glass-shaped beam that projects upwards out of them? Is there anything I can do to control whether or not the beam shows up? I have several teleporters arranged in a circle, all set at an equal height, all fully functioning with matching channels, and yet some of them have beams while others don't. Does anyone know how to fix this? Or why it happens in the first place?