In the past, when going online to select my seats, I couldn't choose exit row/extra legroom seats if I hadn't issued my ticket yet; I had to call the local CX office to reserve such seats. However, on an upcoming itinerary, which hasn't been ticketed yet, I was able to select 31A on the 77A. The entire block of 31ABC and HJK, as well as row 54, were highlighted in blue (for exit row), but the individual seats weren't marked in pink (for extra-legroom seat).

What's even more confusing is that for another (regional) flight in the same itinerary, the extra-legroom seats were marked pink, and I wasn't able to select them.

Anyone have this experience before?? IT glitch, or perhaps it's because ORD is a new route?