Stems of notes

Hi,
I just wanted to point out a small bug that occurred to me both on ubuntu, on both Windows Vista and 7, when, in a range larger or smaller, you go to join the same group two or more notes of different value (of course by chroma down) is not displayed correctly the bar that combines all the shackles of the notes, this happens only when the bar is in the center and holds together all the gambits both above and below. This is a very useful feature especially when for example you want to write more entries in the joints and maybe there is not much space in the staves.
I attach an example to better understand what I'm talking because in fact it is very easy to say.
Edward.