Looks like I can book a O/W international flight, e.g. SFO-PEK in W for less than half of the RT amount. I think this is probably a bug, as I could never even book these O/W for any reasonable amount on the old site. It's especially weird that you can book two O/W fares in W for about $150 < than a RT in W.

Also, it looks like it's incorrectly pricing *A flights on this route, namely, it will only price the Air China flight out in Y. It returned a much lower fare for Air China yesterday on this route (RT).