Just booked a DXB-BKK-SIN-SYD as part of a much longer roundabout trip in J.

BKK flights are only 2 class of course... however singaporeair.com on that flight brings up a seatmap of a three class 777-200ER, including F in row 1 and 2.

When I select seats on LH Miles&Less, as a *G it lets me select 'Prefered' seats', including... 1A. Which SQ says is F even though it doesn't fly BKK-SIN.

Is there a 3 class plane flying on a 2 class route, and I'm managed to snag an F on a J ticket, or is LH bowling a googly?