CCEditBox can not echo user input when editing on iOS

I use CCEditBox to lets user input some text.
When the user click CCEditBox, the virtual keyboard popup, and the user can input some text.
But at the same time the text in the CCEditBox label disappeared, and there is no any echo print when editing.
Also there is no way to manipulate the cursor, select some text, and copy paste.

I think there will be a native edit box show when the virtual keyboard popup. Is there any error I made, or there is some function missing?
Thank you~~

hey, I have the same problem in version 3.0.2 beta.
Did you figure out what went wrong?
Thanks