Clear text filter - Issues

Hi,
I have treegrid which is Loading data in parent - child hierarchical folder format. Here we are four columns, in which name, category…etc. The column name “NAME” type as defined as “tree” and the header having the text_filer attached. while entering “some text” in the filter this will filter the result and showing. If the entering text “network” and this will display the parent record alone which has the name “network systems” even it has the childrens. This is fine. But when clear the filter using backspace key, this will show the “network systems” and other siblings and not the childrens of “network systems”. When we clear the text filter it should show the grid as like when it was loading initially. Right? How to do that? Please help me to fix this. Screen shot attached


Unfortunately the issue cannot be reconstructed locally.
Please, provide us with any kind of sample of your code to reconstruct the issue.