Deactivating filter button does not reset search filter

In this test case, I am trying to trigger the .filter button at table load with:

table.button('.filter').trigger();

or with

initComplete: function () {
this.api().button('.filter').trigger();
}

For both cases, the button is activated correctly when the table loads, but when I deactivate the button, the search filter is not reset. What could be missing here?