Select All vs selecting nothing

I find that selecting NOTHING in a slicer is a very difficult but not impossible thing to do.

The steps are only practical when the number of items is small. The steps are:

- enable the select all button on the slicer if it is not already enabled 
- click the select all button which will cause ALL items to be selected, all checkboxes will be black
- ctrl-click each selected item one at a time which will deselect each item one at a time, checkboxes slowly go white 
- when you finally deselect that last one, NOTHING will finally be selected
- if the slicer is displayed as a list, the item check boxes will all be white

- the slicer's select all check box will not be white, nor black, but instead gray in the middle

So far all of my other attempts at selecting NOTHING actually result in select ALL by virtue of clearing selections. It's as if the data is unfiltered. The slicer's select all is white, and all the items are white. The data is not eliminated.