Mouse position on MS Surface Pro 2 is wrong

[Meltdown]

Is NGUI known to have issues with high-density pixel screens?
We are running an upcoming title on NGUI 3.4.8.

On the MS Surface Pro 2, the touch works perfectly.
However, the mouse positioning is off by about 2 inches.

If you look at this image...
http://1drv.ms/1msLFXa

If you click on the EDIT TEAM button, it will click the BUY HERO CRATES button instead.
If you mouse over on HELP & OPTIONS, you will see that the ARENA button has the mouse over effect.

Touch works perfectly, as previously stated, it is only the mouse that has these issues.

Thanks

[ArenMook]

Unity bug.

http://forum.unity3d.com/threads/210442-Unity-4-3-Win-8-1-XAML-Touch-input-offset-on-Surface-Pro

[Meltdown]

This is not a touch input issue, it is a click input issue, and may be unrelated?

I will chase up with Unity.