i have internal and external family members that use Roku's. If any of them leave the options at default in the app that means theme music will play but set to not repeat.
The server web client reports them playing the theme song even when they are currently playing a movie or tv episode. The activity display flashes between the real item they are playing and theme song which has reached the end but never disappears.
Server Version 3.0.5464.40000 and Roku 1.72 or 1.75. Please fix this when you have time as I don't mind them wanting to use that feature but I have noticed some consistency to the server going unresponsive when one of these theme songs is stuck in activity. For now I made sure all my Roku users turn off theme music.
Nothing in the logs that I could find.