Voice change first voice only after mouse motion
This isn't really a bug.
If you enter note entry mode and then change to let's say voice 3 with Ctrl-I Ctrl-3, the colour of the input marker changes immediately, but when changing back to voice 1 with Ctrl-I Ctrl-1, the colour of the marker doesn't change until another action is performed, like moving the mouse or hitting a key.
So it's look's like if the voice changing wouldn't have worked, but it's only display isn't updated.
cheers,
Friedemann