It happened when they took out J seats, they removed one row of J and inserted two rows of Y. Of course one row of J didn't leave enough room for two of Y, so they stole space back as far as the window rows (whose seats can't move).

According to AC's site, the A320 has 20 J seats where it used to have 24. The A319 still has 16 J seats so I'd guess its economy rows for premium customers are no worse than the rest.

It would have been nice if they'd taken out one row of J, put in one row of Y, and then space _out_ the premium seats (like UA's Premium Economy). But they didn't.

andrew