Can't get Midi to CV Poly Working Correctly

Hi there, I’ve been having a lot of trouble trying to construct a polysynth using the modular plugins on the Mod Dwarf. The envelope, in particular the sustain, doesn’t seem to work on the Midi to CV Poly module, but works fine on the Midi to CV Mono module. I’m not sure if I’m misunderstanding how the poly module works. I’ve uploaded a pedalboard demonstrating the problem: CV Poly - Envelope Error - MOD Audio