Drumset note on incorrect staff line

MuseScore 2.0 r5632

Steps to reproduce bug:
1. Create a new score with drumset 5 lines
2. Press N and quarter note button
3. Click on the bass drum in the drum palette and insert a note on the last measure (bar 16) of the uppermost drum set staff

Actual result: The measure will jump down to the second row as it now no longer fits on the first due to the extra space required by the note and the rests, but the note is in the incorrect position as shown in the attached image.
Expected result: The note should remain in the correct position.

Operating System: tested under Ubuntu 12.04 and MacOS 10.7.4 with same behaviour