Activating the dropdown editor requires two clicks when the user is elsewhere, it is too slow for using.
Use case 1) Correcting a wrong entered product - the user selected the wrong product - he clicks on the cell where the product is entered and starts typing. However, he needs to click twice to activate the editor. On the desktop it works after one click.
Use case 2) Similar problem with mass marking of status changes. User have to click many times. In this case was used an action button to change the status.