Something's definitely off with JAL award recently. On 11/28, F cabin went out with 3 empty seats. I was hoping to get in on one using miles but the seats were never available. There wasn't even seats for sale the entire 2 weeks leading up to the flight. For a period of about 4 hours a week before, there were 2 seats available for cash purchase.
I kept checking constantly until about 1 hr before departure and they never release these seats. Business class also weren't full.