There appears to be a small bug. Where if I edit a post, save it, and then edit it again without reloading the page, it won't show the edits when the edit box shows up, it will show the original post.
If you didn't get that, follow these steps to replicate:
1) Edit a post
2) Save that post
3) Edit it again without reloading the page
4) You will notice it had the original post content from the post creation.
To me it seems that you are not loading the post content from the server each time after the initial load of the post for the edit box.