title: Pivot slicer not coordinating with selected filters
body: <p>I already worked with slicers without problems, but this time I noticed that in this pivot my slicer doesn't update properly according to filters selected. 
  'Allow multiple filters per field' is unticked, so the slicer depends on other filters and thus should be able to hide data that has no values in the filtered pivot...logically.</p>
  
  <p>But why it still shows data that has no values?</p>
  
  <p>Thank you for any help</p>
  
  <p><a href="https://i.stack.imgur.com/tF2gL.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/tF2gL.png" alt="Pivot slicer data with no values still showing even after changing settings"></a></p>
  
  <p><a href="https://i.stack.imgur.com/fK6VK.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/fK6VK.png" alt="Allow multiple filters per field is unticked"></a></p>