Catch bug

Catch bug occurs when the app freezes on the Poke Ball just while you’re trying to catch a pokemon. Give it 10 seconds for the server to catch up; if it doesn’t, then restart the game. The end result is usually one of two. Either you managed to catch the pokemon and he is in your pokemon list, or the pokemon escaped the Poke Ball and spawns at the same location after you’ve restarted the game for you to have another try. There’s also a third option and that is that the pokemon fled, you can check your journal at the character profile if that’s the case, usually it mentions the pokemon fleeing.