title: PowerBI : Dropdown Slicer added to a report changes to List Slicer on reading view or publish
body: <p>When i add a Slicer set as Dropdown, after saving or publishing on the report in reading view it changes to list slicer. ( this is the option that is present in the header link).</p>
  
  <p>I tried changing the visual size, thought that could be a issue, but does not resolve it.</p>
  
  <p>Also in this visual, the header is turned off.</p>
  
  <p>visual size: 150x70.
  Page size: 2048x1080</p>
  
  <p>Any suggestions.</p>