ListGrid Filter resulting in DataSource fetch

[emimayank]

Hi,
So I have a ListGrid with filters as below

However, when I'm trying to use Filter for any of the columns, the ListGrid is trying to do a DataSource fetch instead of locally filtering the records

and is returning the records as is initially returned

For the backend I'm also sending the number of records to be displayed

DSResponse response = new DSResponse(res);
response.setStatus(DSResponse.STATUS_SUCCESS);
response.setSuccess();
response.setStartRow(0);
response.setEndRow(res.size());
response.setTotalRows(res.size());
return response;

The properties of the ListGrid are as follows
lGrid.setAutoFetchData(false);
lGrid.setShowGridSummary(true);
lGrid.setCanEdit(true);
lGrid.setShowFilterEditor(true);
lGrid.setFilterOnKeypress(true);

Can someone please help me to define the filter of the columns as a local filter, instead of doing a backend fetch every time?

[Isomorphic]

See listGrid.dataFetchMode, and for more context, the ResultSet class docs.