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Fluid doesn't flow through connected underground pipes if a gost of undergroud pipe is placed between them.

Artyom wrote: Sat May 16, 2020 5:05 pm Fluid doesn't flow through connected underground pipes if a gost of undergroud pipe is placed between them.

Thanks for the report. That is intended behavior.

And what is this intention?

Intention is to not connect two random endpoints of underground pipe that are probably not ment to be connected together.
This was first done for underground belts due to issue 22720 and later on adopted for underground pipes too.