midi keyboard input issue

Hi,
i'm trying out the new 0.9.5beta2 in windows7
i toggle the midi input button to on.
select a measure (blue box) and play a note. nothing shows on the score.
then i press n to switch to note entry mode. then play the same note. what is printed on the score is the note i previously played plus the new note.
in other words, the notes are being inputted even if not in input mode, but they aren't displayed.
i also succeeded in making the program crash by playing with this bug.