Booked a ticket last week by redeeming AA miles for MNL-SYD thru cx. AA agent claimed there was an issue for issuing tickets and i had to go into the ticketing office in manila. Ended up going there but apparently agent was completly wrong and since 2015 they can issue tickets perfectly fine.
As for rev tickets i have bought some on AA originating in MNL. Thanksgiving was the most recent trip. However they dont codeshare on the tickets they did sell me. They put me on PAL to NRT then AA the restve the way to sfo / return via jfk-dfw-hkg on AA then CX for hkg-mnl although hkg-mnl was not codeshare either