NGUI is missbahaving. in my case UISlicedSprite + UIAncor does not work fine together in some case.
My case is:
1. Make UISlicedSprite + UIAncor.
2. Press save
3. Change resolution (form iphone to ipad or back)
4. Press run.
Gets me the result shown in PIC_Wrong.tiff.
It should be like PIC_Correct.tiff.
The same is happening if i save on a resolution thats not the device resolution.
Using NGUI 2.2.0
Unity 3.5.7f6