Q:

DataTable with Fixed Column in Chrome browser it's showing space between Header and Body

When load datatable grid dynamically with fixed column and/or lazy loading 
it's show space between Header and Body
in this space there's tr with height:0px but for some reason it's not take as height 0px 

I have try to inspect in chrome and try to change height 0px but no change

Note: This issue only face in Chrome but in Firefox looks everything
  fine. :/ 

I can't share a code because of company policy SORRY

A:

I'm also facing this issue last few weeks, I found some code to fix temporary using CSS 
try to use below code 
    /* ---- Temp Override css for resolve DataTable header spacing  ----*/
        .DTFC_ScrollWrapper .dataTables_scrollBody thead tr,. DTFC_ScrollWrapper .dataTables_scrollBody thead tr th {
    height: 0px ! important;
}
        /* ------------------------------ */ 

