See https://de.wikipedia.org/w/index.php?diff=174530951&oldid=174458248&diffmode=visual&visualdiff=1
There are many headlines "Für Jedermann". The first one was moved up, the last one was added, and these two are shown as expected (well, the move is not really clear, but that's T169325).
But there are many more instances of this headline. In these other cases, I expect them to be shown in gray and most of them omitted, as they weren't changed. But currently the visual diff displays them as moves.
Actual:
Expected: