I’ve been frustrated because I’ve been wasting so many Pokéballs on monsters I knew I should have caught on the first throw. You too? That’s because Niantic broke it. They confirmed it in a Tweet on Thursday, and promise a fix:
Trainers, a new bug affecting throw accuracy increases the odds of escape and omits the XP bonus. We are working on a fix, stay tuned…
— Pokémon GO (@PokemonGoApp)