After doing some changes in the playback and other stuff, the score doesn´t scroll anymore during the playback and there is no playcursor visible anymore. Seems to be a bug.
Save, close, reopen. That usually fixes it. Sometimes a reboot, though that’s a last resort.
It may be that you’re experiencing this known bug. Daniel has explained that it’s about to be fixed in the next (minor) update.
And so it has been - much appreciation to Daniel and the team!