Bug on minWidth setting?

Hi,

I am battling with sizing my columns and it seems as though there is a bug with this. using minWidth affects the column widths but in a strange way, see below where I use a large width of 1000 but my columns are only about one inch wide?

        fillspace:true, minWidth:1000,

Works fine for me actually, check https://webix.com/snippet/cc72d6a5

If the issue still occurs, please share a snippet or a demo link.