Ext JS Checkbox in Roweditor

does anybody know how to set the checkbox in a RowEditor into the center position? I use the theme "triton" with Ext JS 6.0.0.

The checkbox is placed to the top of the row, but the other fields like textfield or combobox are placed to center.

It looks like:

i already set the style object of the checkbox to align: center but it didn't work.

plugins: { ptype: 'rowediting', clicksToEdit: 2, saveBtnText: 'Übernehmen', cancelBtnText: 'Abbrechen' },

initComponent: function() {
    var me = this;
    me.store = 'MeasurementPoint';
    me.columns = [
        {
            xtype: 'actioncolumn',
            width: 50,
            sortable: false,
            hideable: false,
            resizable: false,
            menuDisabled: true,
            draggable: false,
            items: [
                {
                    icon: 'Content/images/icon_32/garbage.png',
                    tooltip: 'Löscht den Eintrag',
                    handler: function(view, rowIdx, colIdx, item, ev, record) {
                        Ext.Msg.show({
                            title: 'Löschen bestätigen!',
                            msg: 'Soll der Messpunkt \"' + record.data.Name + '\" wirklich gelöscht werden?',
                            width: 300,
                            buttons: Ext.Msg.YESNO,
                            fn: function(btn) { if (btn === 'yes') view.ownerCt.getStore().remove(record); },
                            //animateTarget: rowIdx,
                            icon: Ext.window.MessageBox.QUESTION
                        });

                    }
                },
                {
                    icon: 'Content/images/icon_32/pencil.png',
                    tooltip: 'Bearbeitet den Eintrag',
                    handler: function(view, rowIdx, colIdx, item, ev, record) {
                        if (this.__form)
                            return;

                        this.__form = Ext.widget('window', {
                            layout: 'fit',
                            width: 500,
                            title: 'Messpunkt bearbeiten',
                            items: { xtype: 'measurementpointform', header: false },
                        }).show();
                        this.__form.down('button[itemId=save-measurementpoint]').action = 'update-measurementpoint';
                        this.__form.down('form').loadRecord(record);
                        this.__form.on('close', function() { this.__form = false }, this, { single: true });
                    }
                }
            ]
        },
        {
            xtype: 'gridcolumn',
            dataIndex: 'Active',
            text: 'Aktiv',
            width: 70,
            renderer: AWA.ImageRenderer.CROSS,
            editor: {
                xtype: 'checkbox',
            }
        },
        {
            xtype: 'gridcolumn',
            dataIndex: 'Manually',
            text: 'Manuell',
            width: 90,
            renderer: AWA.ImageRenderer.TICK,
            editor: {xtype: 'checkbox'}
        }

Thank you guys for helpful anwers