Note entry crash after changing measure duration

1. Create new score (e.g. Violin in 4/4 time)
2. Press N to begin note entry
3. Right-click on the first measure and choose "Measure Properties..."
4. Change Actual measure duration to 1/4
5. Press "OK"
6. Click to add note to first measure

MuseScore hangs

Tested using r.1955 self-built, Window XP. In 0.9.4 MuseScore crashes.