When selecting seats on the CX site - I haven't been able to pick anything other than 2D on my AAdvantage award bookings.
The QR manage booking function seems to let non-status passengers select all of Row 1 as well - so I use that method now to avoid having to call in.
I've been selecting 1A as of late, as I've been booted out of 2A a few times by the computer even if I get an agent to select it for me.