The "Slicer" is inconsistently translated in the table tab vs. all other places.
The text on the button and the header in the tool tip in Tabelværktøjer > Design should be changed to match all the other ones.
I think it is called a Slicer in all English versions even though it is a Slicer Tool but you have to make it consistent.
It may be the same in earlier versions of Excel.
Excel 2016 1710 (8625.2139)