While working on pivot grid, we observe that the filtering condition is applied. But there is no visual indicator showing that the current pivot has applied a filtering condition on a given column.
For instance, the following captured picture is obtained from the demo page. I selected Beverages in the "Category" filter and applied it to the pivot grid.
However, there is no visual clue to tell me how many filtering columns are been used at the moment.
Here is how the filtered and non-filtered fields appear in MS Excel: