(Mac & Linux) If melonDS crashes and you open another instance after, it detects itself as the 2nd instance. This continues going on, so after one more crash it'll be the 3rd, etc.
All this could probably be fixed with some sort of IPC messaging system, but I understand it's not really a priority so I'm leaving it here for the future
Also, may be unrelated, but switching audio between different instances can sometimes be a bit fucky (see https://www.youtube.com/watch?v=DNNo1pv2i3w, issue noticed by @KostaSaizo7)
All this could probably be fixed with some sort of IPC messaging system, but I understand it's not really a priority so I'm leaving it here for the future