I was just working on my project while chat messaging, and I wasn't able to see what I typed!
The hidden text is 'ur text if you typed a lot'. You can see the rest here (posted):
This can be pretty easily solved by allowing the user to make the textarea smaller than 540px. However, I would really like to see what I've been typing on the right, so I don't have to edit it if I make a typo. This isn't the most issue-iest issue, but I think it can be fixed.
Also, another issue, is the full alpha madness! As you can see, is that the text from me that starts with '@hichris123 OAuth stuff' is hidden a bit by my profile picture (and could be hidden by tags). Hooray for issues! :P