The leaf animation signifies a Pokemon is at that location, but there are many times that I stand directly on the animation for multiple minutes and nothing pops up. I've tried walking around the spot and still found nothing, so it doesn't seem to be that my location is slightly off. Some other possible causes that I've ruled out:
- It cannot be a Pokemon that I already caught because it happens in areas where I have not caught anything at all.
- It cannot be an old Pokemon that's despawned before I got to it, because it sometimes happens even after restarting the app.
- It doesn't seem to be a poor connection because I can (sometimes) transfer Pokemon, spin spots, catch other Pokemon, track distance, etc. with no issues.
I've also noticed that there are no Pokemon in the "nearby" list with zero steps when this happens, even after restarting the app. There isn't always one listed even when I can see them, though, so I don't know if it is related or coincidence. My last idea is that it's a Pokemon I'm too low level to catch, but there's usually no one playing by me when this happens, so I don't have any evidence one way or the other. Does anyone know the reason this happens, or should I chalk it up to general bugginess?