CCLayerGradient Move Error in cocos2d-2.1beta3

Hi all:

i use Two CCLayerGradient to create sky….

And when i move CCLayerGradient to UP

Sometime will happen something!

It is hard to say….just like my image

And here have sample code…

Anyone can solve this problem?

PS:I use iPhone4s and iPhone5….only device broken


Normal.PNG (26.7 KB)


Broken.PNG (26.5 KB)


HelloWorldScene.h.zip (0.6 KB)


HelloWorldScene.cpp.zip (1.0 KB)


RootViewController.mm.zip (1.0 KB)

I find when some sprite is moving also happen broken texture

If someone can solve this, plz help me

thanks a lot