Listgrid having conflict when setting both checkbox select and grouping on it

[ashesl]

We are using smartgwt v1.2 (It is an old version but can not update it before next release of our product)

I have Listgrid which has checkbox select as well as grouping by field :-

ListGrid vipServiceGrid = new ListGrid();
vipServiceGrid.setAlternateRecordStyles(true);
vipServiceGrid.setAutoFetchData(true);
vipServiceGrid.setShowAllRecords(true);
vipServiceGrid.setSelectionType(SelectionStyle.SIMPLE);
vipServiceGrid.setSelectionAppearance(SelectionAppearance.CHECKBOX);

ListGridField application = new ListGridField("application", "Application");
ListGridField serviceName = new ListGridField("serviceName", "VIP Name");
ListGridField vip = new ListGridField("serviceIp", "IP Address:Port");
vipServiceGrid.setFields(application, serviceName, vip);

vipServiceGrid.setGroupByField("application");
vipServiceGrid.hideField("application");


The problem is that since I have added the "setGroupByField()", the checkbox in ListGrid header is not working properly. If I click it, then it selects all the rows in grids but if I sepecifically unselect the checkbos for any row in the grid then the header checkbox still stays checked.
Also when I am using vipServiceGrid.deselectAllRecords(), all rows get de-selected but the ListGrid header checkbox still comes as selected.

All these issues go away if I remove the grouping.

Please help, as I need both things to work together.