Serious bug on trying to book an award reservation on the new system:

Looking at DEN-FCO r/t on various dates in October.

Many results show up with both Saver coach and Saver World Business Class (or F/Business on partners CO and DL).

I'm looking to select a 50,000 outbound Saver WBC or CO BusinessFirst, which shows available with a nice bright red "Select" button. I select it, it shows up as the outbound segment. (note that on this new screen, the outbound flight display doesn't show cabin class at all).

Then I go to select a PerkSaver coach return for 25,000 miles.

Select that, and what comes up on the next page is that my outbound has been booked in PerkPASS coach for 50,000 miles instead of PerkSAVER WBC.
Booking class: Y/Coach
Ticket Designator: WP300
Fare basis code: YPASS
Happens that way for all NW or CO selections I make.

If I choose a DL flight in BusinessElite, it does work properly. But don't want to fly on DL's worse old business seat.
Booking class: O/ Business
Ticket Designator: WP300
Fare basis code: CSM

Look at DEN-FCO connections the 2nd week of October, with returns the next week, to see examples. Yes, I've tried it about 5 times making sure I wasn't making a mistake about which "Select" button I was pressing.