Factorio Forums

When basic oil processing recipe is selected in refinery, and pipes are placed on all 5 in- and outputs of the refinery, the pipe connections are not all rendered the same. See below screenshot:
The top output and input are connected correctly, as a fluid is assigned to those pipes. For the pipes with no fluid assigned: the bottom input and output are not connected, while the middle output is properly connected. Here I would expect all three non-assigned pipes to be behaving the same, either all not connected, or all connected.

Thanks for the report, this is not a bug. Even the middle pipe is not connected properly and pipe covers are sticking out.

ah, so the fact that the pipe segment is straight covers up that it is not connected. Apologies, overlooked that detail.