[Trunk] Staccato-sounding note after clicking it during playback

1. Create score.
2. Enable 'Note Entry'.
3. Fill bar with crotchets.
4. Disable 'Note Entry'.
5. Play.
6. Click on the first note head.

Result: It plays staccato-like compared to the others.

Using MuseScore 2.0 Nightly Build (4789) - Mac 10.6.8.