Agree. EITHER bulkhead side is disasterous.
Had 11G last transpac until Joh could coax her seatmate to swap with me (cost me 2 x HK49s but was WELL worth it!) and just 10 minutes sitting there was terrible. The woman sitting in 11H I also asked if she might consider moving to seat us together, and there was NO WAY as she selected that specific seat in advance, so go figger. BUT, she was pretty short.
Ever the little side bins up there seemed smaller.
The UA website has been wrong on that score for a year or more strangely that 12 A/B officially do not exist.