Input Of A Decider Combinator Seems To Be Emitting A Signal

[moronsrus]

The attached save file puts you in the situation depicted by Figure A.

Figure A:

Figure A

ZombieSignalBugReport.png (497.74 KiB) Viewed 1341 times

Basic Description Of Problem:
Power Pole A has a green wire attached to the input of Decider Combinator B.
The output of Decider Combinator B does not attach to Power Pole A (neither directly nor indirectly).
If you hover over Power Pole A, you can see that it has a D signal present.
If you hover over Decider Combinator B, you can see that it has a D signal as an input.
If you break the green circuit wire between Power Pole A, and Decider Combinator B, then the D signal is no longer present on Power Pole A.

More Details:
There are 4 decider combinators connected via green wire.
Two of them output on to the green wire, and two of them take input from the green wire. (Decider Combinator B takes input from the green wire.)
There are no feedback loops here.
Neither of the combinators attached by output indicate that they are outputing a signal when I hover over them.
Additionally, I can disconnect both of these combinators attached by output, and the D signal will still be present on the green wire for the power poles and both the combinators attached by input.
However, if I disconnect either of the combinators attached by input, then the D signal disappears.

[Loewchen]

If you break the green circuit wire between Power Pole A, and Decider Combinator B, then the D signal is no longer present on Power Pole A.

Can not confirm, the D=1 signal is still present on A after disconnecting A and B, therefore there is nothing wrong with B as far as I saw.

[moronsrus]

Ignore me, I'm an idiot.