The latest 2016 version treelist some time doesn't return the right data when apply the filter on column.

Here's the code which you can repeat that bug. When I apply a filter on column ClassSecurity start with "U", the data is incorrect. But the old 2015 version is good.

2016 version  http://dojo.telerik.com/@cchu/IwUso

2015 version  http://dojo.telerik.com/@cchu/uZADe

Hello Congyuan,

Actually the 2016 version demonstrates proper operation of the widget rather than 2015 version. Here is the reason for the above statement:

1. If you run both examples without filtering both shows that there is only one root level item

2. When you filter:

 - 2015 shows 2 root items which is incorrect, there should be still only 1 root item

 - 2016 shows 1 root item, i.e the expected result. 

There is another issue - the data collection have items with duplicate id/xml_seq values:

and when you filter only one of them shows up in the widget as it expects the id field to have unique values.