Thank you, that explains it.

I never noticed the explanation in the tooltip, sorry.

This blueprint illustrates the problem: https://gist.githubusercontent.com/nikonthethird/4b4670c4c34c0b39c3432dd9deea55eb/raw/05fc9fd23e7850d5c80bf706357e0d75f42c6101/Red%2520Circuits.txt

These are two almost identical builds placed on top of each other, they are both supposed to release an equal ...