i have a Ext.grid.EditorGridPanel which contains some columns and also colums with checkboxes. Now i want do enable drag and drop functionality for single rows. The drag and drop functionality works, but as soon as i enable the "enableDragDrop" functionality in my EditorGridPanel my checkboxes aren't working any more. They show up, but when i click on them, they don't change the value. I would really appreciate any help.

A sample CheckBox:
var showInGridViewColumn = new Ext.grid.CheckColumn({
            header: t("dataLoggerColumnDefinitionShowInGridView"),
            dataIndex: "showInGridView",
            width: 50
And this is how my EditorGridPanel looks like:
this.grid = new Ext.grid.EditorGridPanel({
            frame: false,
            enableDragDrop: true,
            autoScroll: true,
            store: this.store,
            columns : typesColumns,
            selModel: new Ext.grid.RowSelectionModel({singleSelect:true}),
            trackMouseOver: true,
            columnLines: true,
            plugins: [showInGridViewColumn,hideInGridViewColumn,showInExport],
            stripeRows: true,
            tbar: [
                    text: t('add'),
                    handler: this.onAdd.bind(this),
                    iconCls: "pimcore_icon_add"
                    text: t('dataLoggerColumnDefinitionWarning'),
                    iconCls: "dataLoggerColumnDefinitionWarning",
                    xtype: "tbtext"
            viewConfig: {
                forceFit: true
            listeners: {
                'render': {
                    scope: this,
                    fn: function(grid) {
                        var ddrow = new Ext.dd.DropTarget(grid.container, {
                            ddGroup : 'columnDefinitionDragAndDrop',
                            notifyDrop : function(dd, e, data){
                                var ds = grid.store;
                                var sm = grid.getSelectionModel();
                                var rows = sm.getSelections();
                                if(dd.getDragData(e)) {
                                    var cindex=dd.getDragData(e).rowIndex;
                                    if(typeof(cindex) != "undefined") {
                                        for(i = 0; i <  rows.length; i++) {