Hi,
I found an issue that occurs only on Windows Phone 8 devices.
When I click on tk2dUITextInput item it does not receive typed chars on WP8.
The system works great on editor but does not on mobile.
The weird thing is, sometimes (5% or less) it works.
I tested on a new scene and with the provided samples.
Here a video to see exactly what is going on:
http://www.youtube.com/watch?v=_HLREw_3QtsUnity Pro 4.2.1f
2D Toolkit 2.2.3
There is any workaround for this, I'm on a project rush here.