Tablature entered at the middle or end of beam collide with, or appear above it

1. Open attached score (produced in 1.3).
2. Click on the bar.
3. 'Copy'.
4. 'Instruments...'.
5. Add 'Acoustic Guitar (nylon)'.
6. Change 'Staff type' to 'Tab. 6-str full'
7. 'OK'.
8. Click on tablature stave.
9. 'Paste'.
10. Enable 'Note Entry'.
11. Click on a note at the middle or end (not the first) of the beam on the top string.

Result: The beam doesn't adjust - numbers collide with the beam, or appear above it.

Using MuseScore 2.0 Nightly Build (0b96ea5) - Mac 10.7.5.