Why the table columns are unnecessary wide and how can I avoid it?

Nestaly75

This is my initialisation:

$('#tablaOpciones').dataTable( {
"aaSorting":[],
"sScrollY": "180px",
"bAutoWidth": false,
"bPaginate": false,
"bScrollCollapse": true,
"bInfo": false,
"bFilter": false
});

The table cloumns in my table are almost the double wide than the content inside.

I cant get rid of the X scroll, what can I use if bScrollAutoCss is now deprecated and the !important in the stylesheet had no effect.
.dataTables_scrollBody{
overflow-x:hidden !important;
}