Korean text isn't shown in Android 4.2.2

Hi.

My game can be installed on Nexus7(Android 4.2.2), but it may looks like this:

figure 1

This app build uses the Flex 4.6 and AIR 3.6, UTF-8 encoded and in Korean.

And the same app looks OK on Android 4.1 device, please look at this:

figure 2

But, the Chinese version is running normally on Nexus7(Android 4.2.2). Like this:

figure 3

I've made some test in Android simulator 4.2.2，the problem is appearing the same as the devices.

And the app don't have its name shown under the "Android Apps" view.

figure 4

The right display should be like this: 

figure 5

BTW: I setted the device to Koera language/Chinese language/English language. The problem is appearing the same.

Somebody help me?