I have just looked at the code in super_orders_functions.php (The file can be found in admin/includes/functions/extra_functions) found in v46 and this has been changed so change it back to the one in v45 as this works correctly or you can change it manually at line 398 to the following code
PHP Code:
function update_status($oID$new_status$notified 0$comments '') {
  global 
$db;

  
$db->Execute("INSERT INTO " TABLE_ORDERS_STATUS_HISTORY "
                (orders_id, orders_status_id, date_added, customer_notified, comments)
                VALUES ('" 
. (int)$oID "',
                '" 
$new_status "',
                now(),
                '" 
$notified "',
                '" 
$comments "')");