Tie command does not properly handle chords with unisons
In any score
Enter a note
Add an unison note (press alt+1)
Add a tied chord by pressing +
Select the measure with these notes and press ctrl+down (or up) arrow
Result: 3 out of 4 notes change octaves as expected.
Expected: all notes change octave
Now select the note that did not change octaves and press ctrl+ up (or down) arrow and see the same notes as before change octaves.
Delete the stray note and reenter it where it belongs. You can move it after you reenter it.