Originally Posted by Thai-Kiwi

Well, that is unexpected! This is DPS-BKK, which date?

Looks like either:

1. a glitch
2. a new system (or trial) to reduce numbers J seats when using the 747 in 2 class config, by providing an empty adjacent seat
3. a leased 747 with a different layout
4. a refurbished THAI 747 cabin

Not sure which is most likely. I'd hope 2, since that would offset the inadequacies of the old angled-recliner seat the 744 has in J.