I'm trying to add grouping feature to my grids but when I try to group by a column that has a ComboBox editor and a renderer to display the displayField's value of the selected record in ComboBox, the group doesn't show the displayed/rendered value: it shows the raw value of the column.

I tried to use the groupHeaderTpl: '{columnName}: {name}' and groupHeaderTpl: '{columnName}: {renderedGroupValue}' but neither worked. I get the result "Company: 1" while I expect to see the result "Company: ABC".

Hope that there is an easy fix that I can apply to solve this very basic problem.

Thanks in advance