Cascade Checkbox on Row Grouping not working for collapsed rows

[tarunsharma]

Hi,

I am using cascade checkbox for my grid. when i checked checkbox on grouped row, it didnt checked all the checkboxes on the detail rows.
Can you check and let me know if  i am doing something wrong. For your reference i am sharing screenshot.


 groupModel: {
                checkbox: true,
                checkboxHead: true,
                on: true,
                dataIndx: ['CustomerName'],
                menuItems: ['grandSummary'],
                summaryInTitleRow: 'all',
                titleInFirstCol: true,
                fixCols: false,
                indent: 20,
                collapsed: [true],
                title: [
                    "{0} ({1})",
                    "{0} - {1}"
                ],
                useLabel: true
            }