Hello,
I have a problem with the UI being smaller only on iPad - despite the ScalingStyle being set to FixedSize. On iPhone and in the Unity Editor everything looks alright, independently of set resolution or aspect ratio.
The problem can be seen in the first screenshot. The bubbles with the tents, skyscraper, gorilla etc are textures in the background - part of the NGUI UI are the grey circles, which should be in the center of the bubbles, as shown in the second screenshot.
Cheers,
Tobias