If you are kind enough please have a look at the MultiPipe component for GH in Rhino 7 Mac, latest built 7.321012.11002.
I get weird results using this component on MacOS Mojave 10.14.6 but the same definition in WIN 10 behaves properly.
I’ve checked Daniel Piker’s MultiPipe example definitions posted here on the forum and they have the same weird behavior on MacOS.
Thank you for this great tool and hope to hear from you soon!