I had this problem on IAH-YVR on 9/3. It was showing 2 seats. When I went to print BP - it had me in a middle seat. I had not paid attention when I printed BP - that'll teach me - but GA paged me and fixed at the gate. Luckily, upgrade came through just before doors closed.

If it's still showing 2 you might want to call or end up where you don't want to sit !