octave 8va_ _ _| is not saved correctly at Voice 2
1) input notes as Voice 2
2) select the first Voice 2 note of the target
3) double click the icon 8va_ _ _ | (octave bass) in pallet, set the range (specifies the last note)
4) playback and confirm the notes octave lower
5) save the score (.mscz)
6) close MuseScore
7) Open the score by MuseScore
8) see the letter "8" only remains, but the line " _ _ _|" part is missing.
9) playback the score
10) confirm the octave bass part doesn't work, just normal, zero-octave.
This happens every time in this save-open-play procedure.