Hi Shawn,
Thanks for using Syncfusion products,
We have tested the GridDataTextFilteringPane in Chinese. Its work fine.
We have attached the video and sample in the following location.
http://www.syncfusion.com/uploads/redirect.aspx?file=Video1_70ae8592.rar&team=developmenthttp://www.syncfusion.com/uploads/redirect.aspx?&team=support&file=Sample1-1249926453.zipThough I may not be doing exactly the same steps as you. If so, please you give us some more details.
Please let us know if you need any more details.
Thanks
Ganesan