Global Site Tags with multi-byte text support?

Thanks very much for creating such a brilliant plugin, or I would rather say idea. Because on my newly created site http://zhongwenblog.com, I installed this plugin but found it's not compatible with Chinese Tags. I checked through the source code and found it is actually using multi-byte compatible functions, any ideas why it's not working?

For example:

All of the tags are correctly displayed at the bottom right corner.

No posts showed there with Chinese tags:
http://zhongwenblog.com/tags/%e4%bb%8e%e5%89%8d/

But English tags are working correctly:
http://zhongwenblog.com/tags/lulus/