A bug in renegade rows weight lifted

In my opinion the Renegade rows weight lifted sum is not counted properly. It is an alternating exercise and its description says one side counts as a rep. In fact it means e.g. 18 counts in total consist of 9 for the left and 9 for the right hand. The Couch instructs e.g. 2x7.5kg dumbbell and assumes that in one rep 2x7.5 kg is lifted and then incorrectly counts weigh lifted as 18x2x7.5. I believe a right formula is 18x7.5 (9 for left and 9 for right hand)