When the MultiSelect is used inside the Grid as a custom editor, the component gets closed on focus or when the user tries to select a second item.
The first item is correctly selected, however, the pop-up is closed every time the user clicks in the input, thus it is not possible to select a second item.
The popup should not close on focus the MultiSelect input and it should be possible to select multiple items.
The MultiSelect is not closed when the downArrow is enabled (column 'Works')