Fixes #24893: re-added line

Author: mabelvj

pandas/tests/reshape/test_pivot.py

@@ -1601,6 +1601,7 @@ def test_pivot_table_margins_name_with_aggfunc_list(self):
         expected = pd.DataFrame(table.values, index=ix, columns=cols)
         tm.assert_frame_equal(table, expected)
 
+    @pytest.mark.xfail(reason="GH#17035 (np.mean of ints is casted back to ints)")
     def test_categorical_margins(self, observed):
         # GH 10989
         df = pd.DataFrame(