@squarpadmin I’m using the latest betaOS. I haven’t saved a particular project with this issue. It’s allways there, no matter what project. And it is easy to repeat:
Put a note on the first step on track X. If it is a sustained note it will be more noticeable that it is not played. Then enter a new track with another midi channel assignment. Start live recording and listen to the count in. When the pattern starts playing the note on the first step on track X is not heard.
Comment: @0v0 mentioned polyphonic data. I’m not sure if it matters if the first note on track X is a single note or a chord. You can try both.