When you press ⌘↩, SideNotes will open Share menu, to quickly share the note, copy its contents or export it to an image. However, many people got used to that Command-Return finishes editing. That's especially common in web user interfaces.
SideNotes allows you to configure this shortcut. To do so, go to Settings > Shortcuts > ⌘↩ (Command-Return) and choose one of 2 options:
- Open share menu (default)
- Hide SideNotes