Dear,
We are having same problem like the one mentioned in the https://datatables.net/forums/discussion/31210/datatables-inline-editor-select-does-not-select-current-value-or-submit-first-value. Can you please send us the fixed .js files.
Basically select combo doesn't maintain the selected value and instead when we click it for editing combo box always initialized and select first value instead of the selected one.
An early reply will be helpful.