Flipped mirrored heads lose sign
It appears that mirrored heads notes lose sign when flipped with stems downwards.
Can be seen in this mscz file Mirrored_heads_lose_sign.mscz
OS: Debian GNU/Linux 9 (stretch), Arch.: x86_64, MuseScore version (64-bit): 2.2.1, revision: 51b8386
AND tried in
OS: Windows 7, Arch.: i386, MuseScore version (32-bit): 2.2.1, revision: 51b8386
Is this a bug that needs to be reported?