Hello, just captured some footage which had 12 scenes. If i select all and drag to the timeline (or whatever it's called) it puts 10,11 and 12 at the start.
When you click on the group to drag them to the timeline, you have to point your cursor to the first item in the list. If you don't, whatever item is under the cursor will become the first item on the timeline, followed by all the others. I bet you selected the first item in the list, scrolled down to the bottom, held the shift key, clicked on the last item, and then dragged the group to the timeline by clicking on the last item and dragging. This will put the last item first, followed by the remaining items in the correct order.
This has been complained about many times, but apparently is a "Windows thing" and Sony would have to create their own spearate internals for their Explorer (and probably Trimmer) view, something they are not likely to do, given all the other priorities.