The online tool doesn't allow QR on the first segment. You have to ticket though one of the other OW carriers to do that, or a travel agent. AA will likely ticket it for you. That's not a bug, QR won't ticket RTW itineraries, so the OW tool excludes them from being the first segment.

I can't speak to the validity of the rest of your itinerary and how you're at 19 segments here when I can see 16 segments on your worksheet. But you've seemingly got an extra connection somewhere that will need eliminated aside from these LHRs between OSL and DOH.