I am using a mac, with unity 5.4.3, and NGUI 3.11.2. I am trying out the examples and play them. But found out that on all examples (except 2,3,4,5,6,8), the screen will flash, that is to say, when you click on anywhere on the screen, the UI items will become big and then go back to normal size in a short time. The other functionalities seem to work fine, but with the screen flashing it is very hard to see what objects you are operating with. Appreciate any help! Thank you!