The peek-a-boo K box is a known issue, it's on the skin developer's list. (It apparently worked in IE, not that I would ever suggest that someone actually USE that program).
I've seen the after-post behavior change a couple of times as the developers continue to tweak, so I'm not even going to guess what the final version will do. I kind of like seeing my post at the end of the thread before I move on, it's not like I'm in a post-whore frenzy to mark my territory on yet another thread; but I can understand the desire to have a choice.
Oh, and the crowns come back as soon as you move to another thread. Geez, chill a little.