Running into a similar issue (March 2023!). I made an aumf Audio Unit expecting it to accept MIDI and audio input. It works fine when I run it from XCode with the simple host app, but in Logic, if I add the plugin to an audio track, it doesn't pick up any MIDI input. If I add the plugin to an instrument track (in the Audio FX slot), I can see MIDI input, but of course no audio input. So is aumf supported yet in Logic?