Power flowing through wiring after removal?

Hi all,

So.. I've got a rather simple arrangement of devices; a generator, feeding a bat-box, feeding a macerator and a couple other devices. I'm using insulated copper wire.

The thing is, if I remove some of the wiring (using an axe), the power somehow keeps flowing. This goes even for removing the wires leading from the generator to the bat-box; there are no other wires, naturally.

I'd call it a bug, but this seems too fundamental to be one; I couldn't possibly be the first to notice. So I'm probably doing something wrong, I just can't figure out what. Help?

Oh, and I'm running v1.106.

..wait, so it actually *was* a bug?

Huh. Okay, I'll do that, thanks. I'm a bit surprised the fix wouldn't be backported to the current stable version, though.