Piano Roll Note off missing

If you adjust the velocity sticks/lines/bumps/ or whatever (?) in the lower velocity lane (not at the note itself, in the velocity lane under the notes!) it sends a note on to the instrument but no note off, resulting in a never ending tone. you have to hit the panic knob of the instrument or hit play to end the note. I think this bug came with velocity preview listening. if you adjust the velocity on the upper side of the not itself in the note view it works fine.