This may not technically be a bug, however does make the make drive shaft useless. Where the input and output blocks are close together, on the ‘make drive shaft’ stage, it causes the resource conveyor to join. Therefore when a drain is created on the output it causes drive shafts to be brought through the resource importer, rather than taking them from the make drive shaft area. Hard to explain in words, picture attached, also save game file.
Either a gap is required between input and output nodes on all stages, or a way of decoupling resource conveyors.
PL - Drive shaft resource issue.zip (51.2 KB)