I noticed that notes are overlapping / stacked on top of each other. I don't get it. How is it possible that there are several notes on top of each other. This leads to some very strange artifacts. E.g. I wondered why the note stopped playing and found that there was a very short note blow the visible note.
I previously thought that these artifacts came from CPU issues. This is very frustrating. Now I have to search all the clips for these duplicates. Or can I do anything against this?