Your code works fine, thanks!
Therefore I could narrow down the problem. It's how my game handles views. I'm using an extension for that and as soon as I disable it the text input works. I played around with the size of the panel and it seems that the offset is calculated wrong. I'll investigate and report later.
Thanks do let me know after you research to see if there's something to be modified or improved. One thing you might want to check out is how the scissoring function interacts with your extension and or your game; you can disable scissoring if you're using the latest version, and revert to using surfaces, which is the way I handled clipping before, and compare. There's a configuration macro in the config script where you can do that.
