Unable to Multi Task

Hi, I had problem with Playbook version, I use cocos2dx version 0.11.0.
So, I open 1 application, and minimize it. Then, I open another application, it only displays splash screen, and crash!
I test other apps that are built without cocos2dx, it works fine.
Therefore, it seems apps that is built using cocos2dx doesn’t support multi-task.
But in android version, it is able to play more than one app of cocos2dx.
Please help to solve this problem. Thanks.

No one got same problem?