Search Builder dropdown column build is not checking for the "searchable": false condition in datatables

If you have a datatable column condition like this...

"columns": [
  { "data": "Name" },
  {
    "data": null,
    "sortable": false,
    "searchable": false,
    "render": function render(data, type, row, meta) {
                    var output = "<a class=\"action-view btn btn-xs btn-outline-secondary\" title=\"View\" href=\"/View/" + row.id + "\"><span class=\"bx bx-edit-alt\"></span></a>";
                    return output;
    }
}]

Search Builder column dropdown will still show the item

I looked at source code, and I could not find (yet) the spot where you are populating it

Start by tracing how the Search Builder column dropdown is populated and where DataTables column options are inspected. Reproduce the example with a column marked "searchable": false, then identify the relevant source and test locations; done means that column no longer appears in the Search Builder dropdown.