No save prompt for imported MIDI file on MuseScore close
1. Import some MIDI file
2. If close the tab (Ctrl+W or via x-button) - save prompt appears;
if close MuseScore app - no prompt.
So it's inconsistent behaviour. Someone already mentioned this issue on IRC.
It can be a side effect of https://github.com/musescore/MuseScore/commit/1ad88b161a6d94f927c48c26c…
Some other related fix was in PR https://github.com/musescore/MuseScore/pull/1735
Platform: Ubuntu 14.04, Windows 7