Decider combinator GUI showing mismatched input/ouput

[report0r]

When input signals are changing fastly, output from decider combinator GUI can mismatch its input.

How to reproduce: In attached picture, two selector combinators select one random signal from one constant combinator with A=1 B=-1, their ouputs are wired into a decider combinator that only ouputs its inputs when every input is negative. Then pause the game multiple times you will see sometimes the signals mismatch.

[mmmPI]

This is how combinator works, if you use the /editor to pause the game, you can more precisely control time flow, the game update circuit values at most 60 times per second, every tick, and it takes 1 tick for the value in the input of a combinator to pass through the output. The mismatch you see is most likely that 1 tick delay.

[report0r]

Thanks, it makes sense. I understand how combinator works, didn't realized that input/output signals in GUI reflect current tick state.