It's 1-26-23 still garbage website, and garbage OneWorld benefits, should be removed from the alliance if they're not gonna adhere to it. I have problems booking seats for my companion as well and it automatically sections us outside of extra legroom section. Additionally when testing it separately, the seats mapping just refuses to load on a new booking with just myself with benefits. They're doing everything possible to block OneWorld benefits. Wow if you leave out the OneWorld # the seats load immediately.

Going to cancel my flight with them. They don't deserve any money.