table header adjusted after clicking on header why???? add jpg for reference

ajayg2

   $('#tblNotesAll').DataTable({
                    "destroy": true,
                    "scrollY": "600px",
                    "scrollX": true,
                    "scrollCollapse": true,
                    "ordering": true,
                    "pagingType": "full_numbers",
                    "ajax": {
                        "url": "../Main/GetAllTodaysNotes",
                        "type": "GET",
                        "data": {
                            "stickerdate": datewithslash
                        }
                    },
                    "sAjaxDataProp": "",
                    "columns": [

                        {
                            "data": "Account"
                        },
                        {
                            "data": "NoteDate",
                            "render": function (value) {
                                if (value === null) return "";
                                var pattern = /Date\(([^)]+)\)/;
                                var results = pattern.exec(value);
                                var dt = new Date(parseFloat(results[1]));

                                return (dt.getMonth() + 1) + "/" + dt.getDate() + "/" + dt.getFullYear();
                            }
                        }
                        ,
                        {
                            "data": "Note",
                            "width": "40%"
                        }
                        ,
                        {
                            "data": "FUDate",
                            "render": function (value) {
                                if (value === null) return "";
                                var pattern = /Date\(([^)]+)\)/;
                                var results = pattern.exec(value);
                                var dt = new Date(parseFloat(results[1]));

                                return (dt.getMonth() + 1) + "/" + dt.getDate() + "/" + dt.getFullYear();
                            }
                        }
                        ,
                        {
                            "data": "User"
                        }

                    ]
                });![](https://datatables.net/forums/uploads/editor/12/x0gwztpscoju.png "")