UX design issue. In Particle mode, Emit Settings won't appear until the emisor is set with a mouse click.
I'n my opinion, I don't understand why is clicking necessary. Also, when using OSC to control the second cursor, the Emit Settings don't appear, and they are useful. It makes the user to do one step more, in order to appear. Another negative aspect is that, without clicking, it looks like there is something missing, if you are an experienced AudioStellar user.