Can't open score if MIDI file with same filename is already open
1) Run MuseScore without any tabs open.
2) Open the attached score "Test.mscz". Result: no problem. The score opens in a tab.
3) Open the attached MIDI file "Test.mid". Result: MIDI file opens, but replaces the score "Test.mscz", so we still have only one tab.
4) Open again the score "Test.mscz". Result: it doesn't work. The score doesn't open. We still have only one tab open and it's the MIDI file.
Config: MuseScore 2.0.3 on Xubuntu 16.10.