PowerBI.Tips - Tutorials - Apply a Filter to a Slicer
У вашего броузера проблема в совместимости с HTML5
Sometimes when you create a slicer in a Power BI report a "Blank" item appears in the list. Based on your report needs you might want to remove this item or other items. This video walks through how to filter items inside a slicer and retain constant slicer settings across multiple report pages.
Music by: https://www.bensound.com/royalty-free-music/track/summer