I'm sure this is a very low priority bug, but as you can see here, it appears that <hr/>'s are not getting rendered in deleted answers (although, the extra vertical space still exists):
However, they do appear in the preview when editing a deleted answer:
Update: Zooming in all the way on my iPad 2 I can actually see a difference in the color. I guess this can be considered a bug/feature-request to make the horizontal rule color a bit darker (or lighter, whatever contrast works better, im no graphics expert), at least for deleted posts.
