I had the same problem. To resolve it, you must add a new class before your table with the sDom
option :
<script type="text/javascript" charset="utf-8">
$(document).ready(function() {
$('#myTable').dataTable({
"sDom": 'fi<"clear">tp'
});
} );
</script>
The syntax of sDom is available here. Adapt it according to your needs. Here we add a new div with the clear
class before the table.
Then add this CSS code to fix the bug :
.clear {
clear: both;
}