Moved panels around on single-column and multi-column dashboards, saw them move to reasonable places and stay there when I reloaded the page.
Not sure if you'd consider this a whitespace-only change detection bug or not, since we're just moving the brace from line 70 up.
I think the rendering is reasonable -- this is the brace from line 70. The brace on line 47/45 moved in, arguably? How would you expect/prefer this be rendered?