Amazing features when editing a message.

I'm trying to edit this post. After clicking the "Edit" button, I just see a blank page...
I tried using different computers and browsers, but it's still the same. There also isn't enough space on either side because when I try to save, it says there are too few characters.
Just in case, I made an HTML copy of the message by viewing the source code in my browser, so if the message gets deleted, we can still access it. So feel free to mess around with it ;)