https://forums.factorio.com/116405


I respectfully disagree with the reply in the linked post. Players shouldn't have to enable developer tools to have a predictable experience. A debug screenshot can show why this happens, but it does not show that it is not a bug. If the hitboxes produce ...

When building a diagonal crossing, the signals do not always work. In the screenshot, the signals on the left crossing work fine. On the right crossing the top signal blinks with the error message "Cannot divide segments".

To reproduce: paste the blueprint.

https://i.imgur.com/MWUIHgz.png ...