I asked my friends today and also checked the NOTAMs — in reality, the route is indeed flown directly without passing those waypoints. However, shouldn’t the LNAV’s improper handling of two consecutive turns be something that the development team should pay attention to? I’ve flown the same route with other aircraft before: although they deviated a little, they were still able to correct themselves and return to the proper path. But the A350 kept circling continuously. I believe this is an issue with the coding.