[Mac OS X] Scores that have not previously been opened do not open at first
Double-click an MSCZ file last saved with MuseScore 1.3 or earlier. MuseScoreNightly launches, but as if you were simply directly opening the application—the Start Center appears, and the main window is empty. The score hasn't opened. If the nightly is already running, the scores open normally. Something to do with 1e2596b4f1 , maybe?