Bug with external battery

[phrwtz]

When you attach the terminals of a battery that is external to the breadboard to the positive and negative bus lines on the breadboard and then run a wires from the positive bus to a resistor (thus creating an open circuit with no current flowing, the voltage from the positive bus to the negative bus is the applied voltage (the emf of the battery) but the voltage between the negative bus and the other end of the wire (the end connected to the resistor) is zero -- implying that the voltage across the (zero resistance) wire is the emf of the battery! The voltage between the negative bus and the other side of the resistance (the "hanging" side) is, correctly, the emf of the battery.

The above is my attempt to include a screenshot. Can it be seen?

This effect is not observed when poles of the external battery are connected to different columns of the breadboard, rather than to the buses.

I've got json scripts that show this effect but I don't know how to deploy the so that other people can see them.