In DO V11, you could open DO in dual pane mode, with D: on the left, E: on the right, (This is my saved setting); and then synchronize one with the other, or find files ETC.
As soon as you click synchronize or find files a settings box opens up below DO, when your all done synchronizing or finding files, you simply close out DO, using the X.
The next time you open DO V11 the box is gone, not so in DO V12.
Can you add this setting, or maybe I missed it?