MIDI goes silent after enabling audio

Hi, I am experiencing an issue with the current project I’m working on. The patch uses MIDI chords along with audio samples. The MIDI works just fine when I start the patch, however, it goes completely silent as soon as I turn on the audio (metro object still sends out bangs, but I’m just able to hear the audio sample). I have to restart MAX completely to hear the MIDI again. I’m including a simplified version of the patch which has the same problem.

Also, apologies in advance - I noticed a similar question has already been asked on this forum a while ago, however, I did not manage to solve anything on my own (it has nothing to do with scheduler in overdrive). Any help is greatly appreciated!