For instance, let's say I wanted to see all of the Pokémon that could learn Baton Pass. I could just go to the Baton Pass page and see all of the compatible Pokémon, but what if I'm stupid and didn't realize that every Eeveelution can have Baton Pass as well?
A more reasonable problem would be if I typed Swords Dance and Baton Pass into the moveset search. Leafeon is able to learn both of these moves, but it doesn't show up in the results. The reason for this? Baton Pass was learned in a pre-evolved state.
I hope it's pretty obvious how big of an issue this one small error could be if you want to build a competitive team. Anyway, it would be great if this problem could be fixed.