Hidden column - resort issue in IE11

Mads

I have a hidden column with a unix timestamp to fix a date sort problem.

$('#data_sort').dataTable({
"order": [[ 0, "desc" ]],
"language": {
"decimal": ",",
"thousands": "."
},
"columnDefs" : [{
"targets" : [0],
"visible" : false
}
]
});

When page is loaded the default sort of my visible date column is working perfectly but not when i resort the column. This is not a problem in Chrome but it is in Internet Explorer (11).

I can't find any related issue to this topic. Can you help me?