Elements of grace notes in drumset incorrectly positioned, or shouldn't appear
S4 - Minor
1. Open attached score (produced in 5c9b9da).
Result: Ledger lines appear at the grace note in bar 9 of drums.
Note: Doing something (moving a note) will correct the layout.
Using MuseScore 2.0 Nightly Build be05ea4 - Mac 10.7.5.