I have noticed some issues with the new split keyboard feature of iOS 5.
First, the when in split-keyboard mode, the screen content is not moved up despite the keyboard covering the content.
As you can see below, in iMessage, it's difficult to read the most-recent messages without moving the keyboard up higher.
Secondly, it doesn't seem to play well with some apps, in this case, the new Facebook iPad app.
In split-keyboard mode, the "Send" button is removed and the return key adds a new line instead of sending a message, making it impossible to send a new message without changing the keyboard mode.
The "Send" button is present with the standard keyboard:
I realize that the latter issue is no doubt an bug on part of the Facebook, but the iMessage bug seems like a pretty big oversight.
Are there some configuration options I'm just not seeing?