Does LabelTTF support Thai language?

I tested LabelTTF class with Thai language, but experienced un-expected result.

I follow this link for wrapping guildeline http://www.cocos2d-x.org/projects/cocos2d-x/wiki/How_does_CCLabelTTF_support_line_breaks_and_wrapping, I hope it’s valid for alpha version 2 code-based as well.
The result is that whenever I try to wrapping text, 2nd line and on will disappear. But for normal English it’s normal.

Can anyone tell me whether it supports Thai language ? or Did I miss anything ?

Sorry, We have never checked Thai Language in Cocos2d-html5.

May be is a bug when we ported it from Cocos2d-x.

I will check it with the developers of Cocos2d-x team.