At nexus 7, android 4.3, cocos2d-x 2.2 will lost CCRenderTexture

cocos2d-x C++
#1

Hi, we tested the CCRenderTexture samples in cocos2d-x 2.2, but there is a problem. At nexus 7, android 4.3, if we use home button in the OS, it will lost the CCRenderTexture, if we use lock button in the device, it is ok. Please help me!

Thanks!