Dear Team,
I am implementing a master/detail hierarchy where the master's template is another datagrid with data gathered by a custom method. I want the detail data grid to show some properties in columns. However I cannot add any columns to the datagrid, if I click on add nothing happens. This beaviour occurs on any newly added datagrid btw.
I can do that too when I choose a data source method because all clumns are generated automatically and I can add or remove them as I wish. However this does not work when I pull an empty datagrid from th side bar and try to add columns immediately after that. The click on "Add" in the columns overview simply does nothng