Lines over empty measures overlap with multimeasure rests
MuseScore 2.0.1 / Windows 7
1) Open this file: ottavas parts.mscz
2) Generate parts -> View all -> Ok
3) View Part
Result: the ottavas lines overlap
4) Return in main score
5) Press "M" (for create multimeasure rests)
Result: same as after step #3
6) Press again "M"
Result: inexpected also: the lines extend now on the four measures.
Priority: minor. Because an ottava over a single *rest* makes no sense at all, so it really won't be an issue in practice.
For related discussion, see: https://musescore.org/fr/node/68271