Segment-attached element in Voice 2 causes corruption in Voice 1 on copy and paste
To reproduce, enter a few notes in Voice 1 and a few notes in Voice 2 in the same measure. Attach a dynamic to one of the notes in Voice 2. Copy the whole measure and paste it anywhere. In the result, whatever note in Voice 1 began at the same point as the note in Voice 2 with the dynamic will be gone, leaving Voice 1 incomplete.