[Trunk] Re-moving note head returns to original position

1. Open score.
2. Double-click note head (to enter edit mode).
3. Press a directional key (e.g. 'Left) five times.
4. Click score (to exit edit mode).
5. Double-click note head (to enter edit mode).
6. Press a directional key once.
7. Click score (to exit edit mode).

Expected result: The note head stays in that position.
Actual result: The note head returns to the original position before it was ever moved.

Using MuseScore 2.0 Nightly Build (4595) - Mac 10.6.8.