It happens as an side effect after I made some alteration to wiki PHP code.
I am sure that the varialbe $wgLanguageCode has been set to appropriate language code(i.e. "zh" for Chinese) and the variable 's runtime value equals to "zh" as it is defined.
However all the text on the UI are still English, except for a small fraction of text in user preferences are Chinese.
BTW: Wiki's version is 1.3.0 beta.
Can anybody give me some advice to solve this problem?
Thank you in advance!
Collin