hello,
If I instance Prefab, after I initialize alpha value of UISprite to 0 to AlphaClip applied UIPanel, the sprite is not displayed to the scene even if I change the value of alpha.
However, if I set intialized value of alpha to minimum value, for example 0.01f which is diaplayable to the scene, I can change the value of alpha and it works.
Many issues from below post are fixed and improved but there are still other issues which is not fixed yet.
http://www.tasharen.com/forum/index.php?topic=7621.0