Decided to test this out with a throwaway file. Loaded a Pokémon Ruby save and tried to change the ability of a Seedot I caught from Early Bird to Chlorophyll but the app acts as if Early Bird is the only ability available to Seedot. Even if I clear the ability field entirely and type out the full ability name, the second I click off of the field, it reverts to the original ability. Tested with FireRed and HeartGold on some other Pokémon that have 2 ability options and got the same result.
Decided to test this out with a throwaway file. Loaded a Pokémon Ruby save and tried to change the ability of a Seedot I caught from Early Bird to Chlorophyll but the app acts as if Early Bird is the only ability available to Seedot. Even if I clear the ability field entirely and type out the full ability name, the second I click off of the field, it reverts to the original ability. Tested with FireRed and HeartGold on some other Pokémon that have 2 ability options and got the same result.