this kind of routing--via aux-sends and their new routing matrix--is pure all internal processing: it doesn't depend on the sound-system in charge, whether genuine jack or pipewire-jack substitution...
and I can confirm @G3N-es results on genuine jackd2; all seems to work as expected (bustest.qtz): track 1's 4ch do appear on channels 1-4 on the 8ch bus and track 2's 4ch on channels 5-8 resp. (also under pw-jack as well).
how could it be any different ?
this kind of routing--via aux-sends and their new routing matrix--is pure all internal processing: it doesn't depend on the sound-system in charge, whether genuine jack or pipewire-jack substitution...
and I can confirm @G3N-es results on genuine jackd2; all seems to work as expected (bustest.qtz): track 1's 4ch do appear on channels 1-4 on the 8ch bus and track 2's 4ch on channels 5-8 resp. (also under pw-jack as well).