Originally Posted by BA6501

They're not like that. The reason they show up like that is because Y+ is part of the Y cabin on the LHR flight, and Y+ has a "G" seat. As there is no G in (real) Y, ExpertFlyer is just leaving a blank space. The configuration is 3-3-3 with no gaps.

By the way, the A350 will be operating the morning ORY rotation late July and late August.