Column menu doesn't close on click out side when navigation feature (cellnav) is activated

As the headline said, you can test it also in the tutorial: http://ui-grid.info/docs/#/tutorial/202_cellnav

1. Activate the cellNav feature
2. click on a cell to focus it
3. click on a headermenu
4. don't close the header menu with the close button -> try to select another cell -> in the example without cellnav, the column menu get close when you click outside of the menu. -> when navigation is on and you have the filter row visible and click on the filter, then the column menu will close correctly, because there is no cellnav on the filter row