If you try to build a gen 6 team and include a Pokémon whose stats changed in Gen 7, said stats will correctly display on the Pokémon list but not on the EV/IV page.
Mega-Alakazam, whose SpD was modified from 95 to 105 in Gen 7, is an example of this minor bug. Tested it with Dugtrio (Atk 80 → 100 in Gen 7) and got the same result. Apparently that only affects Gen 6 formats; the correct values display for past gens.

