Hi, I´m was just testing 9.6b1. (I don´t know if this is a regression or an earlier bug).
When using a midi keyboard to enter notes as one would with the pc keyboard in Note mode. Instead of writing each note one by one and reproducing each sound, it appears to do nothing while you touch the keys, and then if you touch left or wright arrow or get out of Note mode it is written all together and the last note is reproduced.
(Thanks for all
tato)