Currently if you append or insert to an object that uses a datasource (such as grid or treeview), none of the existing entires will have the template applied. This is a major problem and should be resolved ASAP.
this is good news
Jose, if you experience technical issues with such implementation, please contact our support team at telerik.com for assistance. The previous issue reported here should have been addressed long time ago.
Has this been addressed in future release. I am using kendo.web-2014.1.318.min.js and the problem still persist. I can't append new node using template.
This issue is addressed and the fix will be available with the next Kendo UI release. Thanks for reporting it.