Exactly the answer I came here looking for. As you say, with “Return to Start Position on Stop” toggled off but with a Marker selected (so Description/ID/Start in the status line at the top left), hitting Space during playback would return me to the Marker; when I clicked away from any specific object (so I had “No Object Selected” in the status bar at the top), play stopped where it was, which was what I wanted to do.
