When an empty array is passed to the MultiSelect's value method inside the deselect event, the item that is deselected remains selected in the MultiSelect.
The different MultiSelect items are deselected except for the "All" item.
*If the "if" statement is removed from the deselect event function in the Dojo, and only the 'e.sender.value();' is kept, the issue is reproducing no matter of the selected item in MultiSelect's popup.
Calling 'e.sender.value();' should remove all items selected in the MultiSelect.
Click on the "Clear values" button to see the expected behavior.