No, sometimes you have to disable the "Microsoft Synthesizer" output, or it receives from a midiout even if that is assigned to another device. basically because of that bug and the solution by switching off the "MS synthesizer" output, i want to implement the midi setup window.
what now works, at least by saving the midi setup as a patcher and use that in the patch. strange
edit: doesn’t work in a standalone, not includable hmm back to zero
I’m still interessted how this works and why it is not customizable.